51163537 has 4 divisors (see below), whose sum is σ = 51531760. Its totient is φ = 50795316.

The previous prime is 51163517. The next prime is 51163549. The reversal of 51163537 is 73536115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51163537 - 2¹¹ = 51161489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51163499 and 51163508.

It is not an unprimeable number, because it can be changed into a prime (51163517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183903 + ... + 184180.

It is an arithmetic number, because the mean of its divisors is an integer number (12882940).

Almost surely, 2^51163537 is an apocalyptic number.

It is an amenable number.

51163537 is a deficient number, since it is larger than the sum of its proper divisors (368223).

51163537 is a wasteful number, since it uses less digits than its factorization.

51163537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368222.

The product of its digits is 9450, while the sum is 31.

The square root of 51163537 is about 7152.8691446160. The cubic root of 51163537 is about 371.2389366646.

The spelling of 51163537 in words is "fifty-one million, one hundred sixty-three thousand, five hundred thirty-seven".