51525642 has 16 divisors (see below), whose sum is σ = 117772992. Its totient is φ = 14721600.

The previous prime is 51525641. The next prime is 51525667. The reversal of 51525642 is 24652515.

It is not an unprimeable number, because it can be changed into a prime (51525641) 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, 613359 + ... + 613442.

It is an arithmetic number, because the mean of its divisors is an integer number (7360812).

Almost surely, 2^51525642 is an apocalyptic number.

51525642 is an abundant number, since it is smaller than the sum of its proper divisors (66247350).

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

51525642 is a wasteful number, since it uses less digits than its factorization.

51525642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226813.

The product of its digits is 12000, while the sum is 30.

The square root of 51525642 is about 7178.1363876705. The cubic root of 51525642 is about 372.1126812075.

The spelling of 51525642 in words is "fifty-one million, five hundred twenty-five thousand, six hundred forty-two".