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53415031 = 115346327
BaseRepresentation
bin1100101111000…
…0110001110111
310201111202122111
43023300301313
5102133240111
65144511451
71216006645
oct313606167
9121452574
1053415031
112817355a
1215a7b587
13b0b2937
147146195
154a51a21
hex32f0c77

53415031 has 4 divisors (see below), whose sum is σ = 53462512. Its totient is φ = 53367552.

The previous prime is 53415007. The next prime is 53415053. The reversal of 53415031 is 13051435.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13051435 = 52610287.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53415031 is a prime.

It is a super-2 number, since 2×534150312 = 5706331073461922, 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 = 53414993 and 53415011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53410031) 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, 22011 + ... + 24316.

It is an arithmetic number, because the mean of its divisors is an integer number (13365628).

Almost surely, 253415031 is an apocalyptic number.

53415031 is a deficient number, since it is larger than the sum of its proper divisors (47481).

53415031 is a wasteful number, since it uses less digits than its factorization.

53415031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47480.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 53415031 is about 7308.5587498494. The cubic root of 53415031 is about 376.6065146155.

Adding to 53415031 its reverse (13051435), we get a palindrome (66466466).

The spelling of 53415031 in words is "fifty-three million, four hundred fifteen thousand, thirty-one".

Divisors: 1 1153 46327 53415031