51156105 has 64 divisors (see below), whose sum is σ = 109928448. Its totient is φ = 19618560.

The previous prime is 51156097. The next prime is 51156109. The reversal of 51156105 is 50165115.

It is not a de Polignac number, because 51156105 - 2³ = 51156097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51156109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13312 + ... + 16718.

It is an arithmetic number, because the mean of its divisors is an integer number (1717632).

Almost surely, 2^51156105 is an apocalyptic number.

51156105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51156105 is an abundant number, since it is smaller than the sum of its proper divisors (58772343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51156105 is a wasteful number, since it uses less digits than its factorization.

51156105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51156105 is about 7152.3496139381. The cubic root of 51156105 is about 371.2209604421.

It can be divided in two parts, 511 and 56105, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 51156105 in words is "fifty-one million, one hundred fifty-six thousand, one hundred five".