51132042 has 24 divisors (see below), whose sum is σ = 119308644. Its totient is φ = 15732864.

The previous prime is 51132041. The next prime is 51132049. The reversal of 51132042 is 24023115.

It can be written as a sum of positive squares in 2 ways, for example, as 42889401 + 8242641 = 6549^2 + 2871^2 .

It is a super-2 number, since 2×51132042² = 5228971438179528, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (51132041) 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 11 ways as a sum of consecutive naturals, for example, 109023 + ... + 109490.

Almost surely, 2^51132042 is an apocalyptic number.

51132042 is an abundant number, since it is smaller than the sum of its proper divisors (68176602).

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

51132042 is a wasteful number, since it uses less digits than its factorization.

51132042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218534 (or 218531 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51132042 is about 7150.6672415936. The cubic root of 51132042 is about 371.1627458788.

Adding to 51132042 its reverse (24023115), we get a palindrome (75155157).

The spelling of 51132042 in words is "fifty-one million, one hundred thirty-two thousand, forty-two".