51575506 has 8 divisors (see below), whose sum is σ = 79858944. Its totient is φ = 24955860.

The previous prime is 51575479. The next prime is 51575509. The reversal of 51575506 is 60557515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51575509) 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, 415870 + ... + 415993.

It is an arithmetic number, because the mean of its divisors is an integer number (9982368).

Almost surely, 2^51575506 is an apocalyptic number.

51575506 is a deficient number, since it is larger than the sum of its proper divisors (28283438).

51575506 is a wasteful number, since it uses less digits than its factorization.

51575506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831896.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 51575506 is about 7181.6088726691. The cubic root of 51575506 is about 372.2326799996.

Subtracting 51575506 from its reverse (60557515), we obtain a square (8982009 = 2997²).

The spelling of 51575506 in words is "fifty-one million, five hundred seventy-five thousand, five hundred six".