72356149 has 2 divisors, whose sum is σ = 72356150. Its totient is φ = 72356148.

The previous prime is 72356117. The next prime is 72356159. The reversal of 72356149 is 94165327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63888049 + 8468100 = 7993^2 + 2910^2 .

It is a cyclic number.

It is not a de Polignac number, because 72356149 - 2⁵ = 72356117 is a prime.

It is a super-2 number, since 2×72356149² = 10470824596220402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72356159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36178074 + 36178075.

It is an arithmetic number, because the mean of its divisors is an integer number (36178075).

Almost surely, 2^72356149 is an apocalyptic number.

It is an amenable number.

72356149 is a deficient number, since it is larger than the sum of its proper divisors (1).

72356149 is an equidigital number, since it uses as much as digits as its factorization.

72356149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 72356149 is about 8506.2417670790. The cubic root of 72356149 is about 416.7015809321.

The spelling of 72356149 in words is "seventy-two million, three hundred fifty-six thousand, one hundred forty-nine".