51415152 has 20 divisors (see below), whose sum is σ = 132822600. Its totient is φ = 17138368.

The previous prime is 51415139. The next prime is 51415153. The reversal of 51415152 is 25151415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51415153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535527 + ... + 535622.

It is an arithmetic number, because the mean of its divisors is an integer number (6641130).

Almost surely, 2^51415152 is an apocalyptic number.

It is an amenable number.

51415152 is an abundant number, since it is smaller than the sum of its proper divisors (81407448).

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

51415152 is a wasteful number, since it uses less digits than its factorization.

51415152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071160 (or 1071154 counting only the distinct ones).

The product of its digits is 1000, while the sum is 24.

The square root of 51415152 is about 7170.4359700091. The cubic root of 51415152 is about 371.8465085344.

Adding to 51415152 its reverse (25151415), we get a palindrome (76566567).

The spelling of 51415152 in words is "fifty-one million, four hundred fifteen thousand, one hundred fifty-two".