47520251 has 2 divisors, whose sum is σ = 47520252. Its totient is φ = 47520250.

The previous prime is 47520233. The next prime is 47520307. The reversal of 47520251 is 15202574.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47520251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47520251.

It is not a weakly prime, because it can be changed into another prime (47520211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23760125 + 23760126.

It is an arithmetic number, because the mean of its divisors is an integer number (23760126).

Almost surely, 2^47520251 is an apocalyptic number.

47520251 is a deficient number, since it is larger than the sum of its proper divisors (1).

47520251 is an equidigital number, since it uses as much as digits as its factorization.

47520251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 47520251 is about 6893.4933814431. The cubic root of 47520251 is about 362.2092819338.

The spelling of 47520251 in words is "forty-seven million, five hundred twenty thousand, two hundred fifty-one".