51133152 has 48 divisors (see below), whose sum is σ = 153401472. Its totient is φ = 14609280.

The previous prime is 51133111. The next prime is 51133171. The reversal of 51133152 is 25133115.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51133152² = 5229198466910208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37374 + ... + 38717.

It is an arithmetic number, because the mean of its divisors is an integer number (3195864).

Almost surely, 2^51133152 is an apocalyptic number.

It is an amenable number.

51133152 is an abundant number, since it is smaller than the sum of its proper divisors (102268320).

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

51133152 is a wasteful number, since it uses less digits than its factorization.

51133152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76111 (or 76103 counting only the distinct ones).

The product of its digits is 450, while the sum is 21.

The square root of 51133152 is about 7150.7448563069. The cubic root of 51133152 is about 371.1654316550.

Adding to 51133152 its reverse (25133115), we get a palindrome (76266267).

The spelling of 51133152 in words is "fifty-one million, one hundred thirty-three thousand, one hundred fifty-two".