72275479 has 2 divisors, whose sum is σ = 72275480. Its totient is φ = 72275478.

The previous prime is 72275473. The next prime is 72275503. The reversal of 72275479 is 97457227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72275479 - 2³ = 72275471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72275471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36137739 + 36137740.

It is an arithmetic number, because the mean of its divisors is an integer number (36137740).

Almost surely, 2^72275479 is an apocalyptic number.

72275479 is a deficient number, since it is larger than the sum of its proper divisors (1).

72275479 is an equidigital number, since it uses as much as digits as its factorization.

72275479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The square root of 72275479 is about 8501.4986325941. The cubic root of 72275479 is about 416.5466628989.

The spelling of 72275479 in words is "seventy-two million, two hundred seventy-five thousand, four hundred seventy-nine".