47155019 has 2 divisors, whose sum is σ = 47155020. Its totient is φ = 47155018.

The previous prime is 47154977. The next prime is 47155027. The reversal of 47155019 is 91055174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47155019 - 2¹² = 47150923 is a prime.

It is a super-2 number, since 2×47155019² = 4447191633780722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47155049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23577509 + 23577510.

It is an arithmetic number, because the mean of its divisors is an integer number (23577510).

Almost surely, 2^47155019 is an apocalyptic number.

47155019 is a deficient number, since it is larger than the sum of its proper divisors (1).

47155019 is an equidigital number, since it uses as much as digits as its factorization.

47155019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 47155019 is about 6866.9512157871. The cubic root of 47155019 is about 361.2789361527.

The spelling of 47155019 in words is "forty-seven million, one hundred fifty-five thousand, nineteen".