51472507 has 4 divisors (see below), whose sum is σ = 52727976. Its totient is φ = 50217040.

The previous prime is 51472489. The next prime is 51472511. The reversal of 51472507 is 70527415.

51472507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51472507 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51472207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627673 + ... + 627754.

It is an arithmetic number, because the mean of its divisors is an integer number (13181994).

Almost surely, 2^51472507 is an apocalyptic number.

51472507 is a deficient number, since it is larger than the sum of its proper divisors (1255469).

51472507 is a wasteful number, since it uses less digits than its factorization.

51472507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255468.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 51472507 is about 7174.4342634106. The cubic root of 51472507 is about 371.9847254491.

The spelling of 51472507 in words is "fifty-one million, four hundred seventy-two thousand, five hundred seven".