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54912631 = 291893539
BaseRepresentation
bin1101000101111…
…0011001110111
310211022211222011
43101132121313
5103024201011
65240545051
71234515064
oct321363167
9124284864
1054912631
1128aa6744
1216482187
13b4b84a7
147415c6b
154c4a621
hex345e677

54912631 has 4 divisors (see below), whose sum is σ = 56806200. Its totient is φ = 53019064.

The previous prime is 54912629. The next prime is 54912667. The reversal of 54912631 is 13621945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13621945 = 52724389.

It is a cyclic number.

It is not a de Polignac number, because 54912631 - 21 = 54912629 is a prime.

It is a super-2 number, since 2×549126312 = 6030794086684322, 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 = 54912593 and 54912602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54912331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946741 + ... + 946798.

It is an arithmetic number, because the mean of its divisors is an integer number (14201550).

Almost surely, 254912631 is an apocalyptic number.

54912631 is a deficient number, since it is larger than the sum of its proper divisors (1893569).

54912631 is a wasteful number, since it uses less digits than its factorization.

54912631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893568.

The product of its digits is 6480, while the sum is 31.

The square root of 54912631 is about 7410.3057291855. The cubic root of 54912631 is about 380.0937695648.

The spelling of 54912631 in words is "fifty-four million, nine hundred twelve thousand, six hundred thirty-one".

Divisors: 1 29 1893539 54912631