51506052 has 24 divisors (see below), whose sum is σ = 129425856. Its totient is φ = 15847968.

The previous prime is 51506051. The next prime is 51506053. The reversal of 51506052 is 25060515.

It is an interprime number because it is at equal distance from previous prime (51506051) and next prime (51506053).

It is not an unprimeable number, because it can be changed into a prime (51506051) 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, 164928 + ... + 165239.

It is an arithmetic number, because the mean of its divisors is an integer number (5392744).

Almost surely, 2^51506052 is an apocalyptic number.

51506052 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51506052 is an abundant number, since it is smaller than the sum of its proper divisors (77919804).

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

51506052 is a wasteful number, since it uses less digits than its factorization.

51506052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330187 (or 330185 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 51506052 is about 7176.7716976368. The cubic root of 51506052 is about 372.0655162673.

Adding to 51506052 its reverse (25060515), we get a palindrome (76566567).

The spelling of 51506052 in words is "fifty-one million, five hundred six thousand, fifty-two".