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54132631 = 77733233
BaseRepresentation
bin1100111001111…
…1111110010111
310202212020000021
43032133332113
5102324221011
65212130011
71225056040
oct316377627
9122766007
1054132631
1128613713
1216166907
13b2a4457
1472918c7
154b44471
hex339ff97

54132631 has 4 divisors (see below), whose sum is σ = 61865872. Its totient is φ = 46399392.

The previous prime is 54132619. The next prime is 54132649. The reversal of 54132631 is 13623145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13623145 = 52724629.

It is a cyclic number.

It is not a de Polignac number, because 54132631 - 27 = 54132503 is a prime.

It is a super-2 number, since 2×541326312 = 5860683477964322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54132596 and 54132605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54132431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3866610 + ... + 3866623.

It is an arithmetic number, because the mean of its divisors is an integer number (15466468).

Almost surely, 254132631 is an apocalyptic number.

54132631 is a deficient number, since it is larger than the sum of its proper divisors (7733241).

54132631 is an equidigital number, since it uses as much as digits as its factorization.

54132631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733240.

The product of its digits is 2160, while the sum is 25.

The square root of 54132631 is about 7357.4880903743. The cubic root of 54132631 is about 378.2855149036.

Adding to 54132631 its reverse (13623145), we get a palindrome (67755776).

The spelling of 54132631 in words is "fifty-four million, one hundred thirty-two thousand, six hundred thirty-one".

Divisors: 1 7 7733233 54132631