73055971 has 2 divisors, whose sum is σ = 73055972. Its totient is φ = 73055970.

The previous prime is 73055951. The next prime is 73055977. The reversal of 73055971 is 17955037.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73055971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73055971.

It is not a weakly prime, because it can be changed into another prime (73055977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36527985 + 36527986.

It is an arithmetic number, because the mean of its divisors is an integer number (36527986).

Almost surely, 2^73055971 is an apocalyptic number.

73055971 is a deficient number, since it is larger than the sum of its proper divisors (1).

73055971 is an equidigital number, since it uses as much as digits as its factorization.

73055971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 73055971 is about 8547.2785727388. The cubic root of 73055971 is about 418.0407059555.

The spelling of 73055971 in words is "seventy-three million, fifty-five thousand, nine hundred seventy-one".