47515081 has 2 divisors, whose sum is σ = 47515082. Its totient is φ = 47515080.

The previous prime is 47514967. The next prime is 47515099. The reversal of 47515081 is 18051574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 2839225 = 6684^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 47515081 - 2⁹ = 47514569 is a prime.

It is a super-2 number, since 2×47515081² = 4515365844873122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47515681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23757540 + 23757541.

It is an arithmetic number, because the mean of its divisors is an integer number (23757541).

Almost surely, 2^47515081 is an apocalyptic number.

It is an amenable number.

47515081 is a deficient number, since it is larger than the sum of its proper divisors (1).

47515081 is an equidigital number, since it uses as much as digits as its factorization.

47515081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 47515081 is about 6893.1183799497. The cubic root of 47515081 is about 362.1961458507.

The spelling of 47515081 in words is "forty-seven million, five hundred fifteen thousand, eighty-one".