47320051 has 4 divisors (see below), whose sum is σ = 49810600. Its totient is φ = 44829504.

The previous prime is 47319997. The next prime is 47320057. The reversal of 47320051 is 15002374.

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-47320051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47320057) 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, 1245246 + ... + 1245283.

It is an arithmetic number, because the mean of its divisors is an integer number (12452650).

Almost surely, 2^47320051 is an apocalyptic number.

47320051 is a deficient number, since it is larger than the sum of its proper divisors (2490549).

47320051 is a wasteful number, since it uses less digits than its factorization.

47320051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490548.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 47320051 is about 6878.9571157262. The cubic root of 47320051 is about 361.6999105357.

The spelling of 47320051 in words is "forty-seven million, three hundred twenty thousand, fifty-one".