51260136 has 32 divisors (see below), whose sum is σ = 129699360. Its totient is φ = 16880192.

The previous prime is 51260107. The next prime is 51260137. The reversal of 51260136 is 63106215.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (51260137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10875 + ... + 14858.

It is an arithmetic number, because the mean of its divisors is an integer number (4053105).

Almost surely, 2^51260136 is an apocalyptic number.

It is an amenable number.

51260136 is an abundant number, since it is smaller than the sum of its proper divisors (78439224).

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

51260136 is a wasteful number, since it uses less digits than its factorization.

51260136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25825 (or 25821 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51260136 is about 7159.6184255867. The cubic root of 51260136 is about 371.4724282392.

The spelling of 51260136 in words is "fifty-one million, two hundred sixty thousand, one hundred thirty-six".