51531104 has 12 divisors (see below), whose sum is σ = 101451924. Its totient is φ = 25765536.

The previous prime is 51531079. The next prime is 51531113. The reversal of 51531104 is 40113515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805142 + ... + 805205.

It is an arithmetic number, because the mean of its divisors is an integer number (8454327).

Almost surely, 2^51531104 is an apocalyptic number.

It is an amenable number.

51531104 is a deficient number, since it is larger than the sum of its proper divisors (49920820).

51531104 is a wasteful number, since it uses less digits than its factorization.

51531104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610357 (or 1610349 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51531104 is about 7178.5168384563. The cubic root of 51531104 is about 372.1258294031.

Adding to 51531104 its reverse (40113515), we get a palindrome (91644619).

The spelling of 51531104 in words is "fifty-one million, five hundred thirty-one thousand, one hundred four".