51031152 has 30 divisors (see below), whose sum is σ = 142816752. Its totient is φ = 17010336.

The previous prime is 51031147. The next prime is 51031157. The reversal of 51031152 is 25113015.

51031152 is a `hidden beast` number, since 510 + 3 + 1 + 152 = 666.

It is an interprime number because it is at equal distance from previous prime (51031147) and next prime (51031157).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177048 + ... + 177335.

Almost surely, 2^51031152 is an apocalyptic number.

It is an amenable number.

51031152 is an abundant number, since it is smaller than the sum of its proper divisors (91785600).

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

51031152 is a wasteful number, since it uses less digits than its factorization.

51031152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354397 (or 354388 counting only the distinct ones).

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

The square root of 51031152 is about 7143.6091718402. The cubic root of 51031152 is about 370.9184680968.

Adding to 51031152 its reverse (25113015), we get a palindrome (76144167).

The spelling of 51031152 in words is "fifty-one million, thirty-one thousand, one hundred fifty-two".