51442152 has 32 divisors (see below), whose sum is σ = 128865600. Its totient is φ = 17112704.

The previous prime is 51442133. The next prime is 51442163. The reversal of 51442152 is 25124415.

It is a super-2 number, since 2×51442152² = 5292590004782208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11773 + ... + 15539.

It is an arithmetic number, because the mean of its divisors is an integer number (4027050).

Almost surely, 2^51442152 is an apocalyptic number.

It is an amenable number.

51442152 is an abundant number, since it is smaller than the sum of its proper divisors (77423448).

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

51442152 is a wasteful number, since it uses less digits than its factorization.

51442152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 4341 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 51442152 is about 7172.3184536104. The cubic root of 51442152 is about 371.9115872671.

Adding to 51442152 its reverse (25124415), we get a palindrome (76566567).

The spelling of 51442152 in words is "fifty-one million, four hundred forty-two thousand, one hundred fifty-two".