51102135 has 24 divisors (see below), whose sum is σ = 101231520. Its totient is φ = 23360832.

The previous prime is 51102131. The next prime is 51102151. The reversal of 51102135 is 53120115.

It is not a de Polignac number, because 51102135 - 2² = 51102131 is a prime.

It is a super-2 number, since 2×51102135² = 5222856403116450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80800 + ... + 81429.

It is an arithmetic number, because the mean of its divisors is an integer number (4217980).

Almost surely, 2^51102135 is an apocalyptic number.

51102135 is a deficient number, since it is larger than the sum of its proper divisors (50129385).

51102135 is a wasteful number, since it uses less digits than its factorization.

51102135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162247 (or 162244 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51102135 is about 7148.5757322700. The cubic root of 51102135 is about 371.0903677202.

The spelling of 51102135 in words is "fifty-one million, one hundred two thousand, one hundred thirty-five".