51115535 has 8 divisors (see below), whose sum is σ = 62378640. Its totient is φ = 40199104.

The previous prime is 51115523. The next prime is 51115543. The reversal of 51115535 is 53551115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51115535 is a prime.

It is a super-2 number, since 2×51115535² = 5225595836672450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86342 + ... + 86931.

It is an arithmetic number, because the mean of its divisors is an integer number (7797330).

Almost surely, 2^51115535 is an apocalyptic number.

51115535 is a deficient number, since it is larger than the sum of its proper divisors (11263105).

51115535 is a wasteful number, since it uses less digits than its factorization.

51115535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173337.

The product of its digits is 1875, while the sum is 26.

The square root of 51115535 is about 7149.5129204723. The cubic root of 51115535 is about 371.1228006532.

The spelling of 51115535 in words is "fifty-one million, one hundred fifteen thousand, five hundred thirty-five".