51152052 has 24 divisors (see below), whose sum is σ = 136405696. Its totient is φ = 14614848.

The previous prime is 51152041. The next prime is 51152053. The reversal of 51152052 is 25025115.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51152053) 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, 304393 + ... + 304560.

Almost surely, 2^51152052 is an apocalyptic number.

It is an amenable number.

51152052 is an abundant number, since it is smaller than the sum of its proper divisors (85253644).

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

51152052 is a wasteful number, since it uses less digits than its factorization.

51152052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608967 (or 608965 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51152052 is about 7152.0662748607. The cubic root of 51152052 is about 371.2111564752.

Adding to 51152052 its reverse (25025115), we get a palindrome (76177167).

The spelling of 51152052 in words is "fifty-one million, one hundred fifty-two thousand, fifty-two".