51153128 has 16 divisors (see below), whose sum is σ = 103290180. Its totient is φ = 23609088.

The previous prime is 51153107. The next prime is 51153161. The reversal of 51153128 is 82135115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50665924 + 487204 = 7118^2 + 698^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 51153097 and 51153106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245825 + ... + 246032.

Almost surely, 2^51153128 is an apocalyptic number.

It is an amenable number.

51153128 is an abundant number, since it is smaller than the sum of its proper divisors (52137052).

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

51153128 is a wasteful number, since it uses less digits than its factorization.

51153128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491876 (or 491872 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 51153128 is about 7152.1414974817. The cubic root of 51153128 is about 371.2137593059.

The spelling of 51153128 in words is "fifty-one million, one hundred fifty-three thousand, one hundred twenty-eight".