51151365 has 32 divisors (see below), whose sum is σ = 91232640. Its totient is φ = 27191808.

The previous prime is 51151357. The next prime is 51151403. The reversal of 51151365 is 56315115.

It is not a de Polignac number, because 51151365 - 2³ = 51151357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75669 + ... + 76341.

It is an arithmetic number, because the mean of its divisors is an integer number (2851020).

Almost surely, 2^51151365 is an apocalyptic number.

It is an amenable number.

51151365 is a deficient number, since it is larger than the sum of its proper divisors (40081275).

51151365 is a wasteful number, since it uses less digits than its factorization.

51151365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1244 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 51151365 is about 7152.0182466210. The cubic root of 51151365 is about 371.2094946115.

The spelling of 51151365 in words is "fifty-one million, one hundred fifty-one thousand, three hundred sixty-five".