51951567 has 16 divisors (see below), whose sum is σ = 75269120. Its totient is φ = 31752000.

The previous prime is 51951563. The next prime is 51951569. The reversal of 51951567 is 76515915.

It is not a de Polignac number, because 51951567 - 2² = 51951563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51951563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12934 + ... + 16467.

It is an arithmetic number, because the mean of its divisors is an integer number (4704320).

Almost surely, 2^51951567 is an apocalyptic number.

51951567 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51951567 is a deficient number, since it is larger than the sum of its proper divisors (23317553).

51951567 is a wasteful number, since it uses less digits than its factorization.

51951567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29454.

The product of its digits is 47250, while the sum is 39.

The square root of 51951567 is about 7207.7435442724. The cubic root of 51951567 is about 373.1351971770.

The spelling of 51951567 in words is "fifty-one million, nine hundred fifty-one thousand, five hundred sixty-seven".