72652157 has 2 divisors, whose sum is σ = 72652158. Its totient is φ = 72652156.

The previous prime is 72652117. The next prime is 72652171. The reversal of 72652157 is 75125627.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40627876 + 32024281 = 6374^2 + 5659^2 .

It is a cyclic number.

It is not a de Polignac number, because 72652157 - 2¹² = 72648061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72652117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36326078 + 36326079.

It is an arithmetic number, because the mean of its divisors is an integer number (36326079).

Almost surely, 2^72652157 is an apocalyptic number.

It is an amenable number.

72652157 is a deficient number, since it is larger than the sum of its proper divisors (1).

72652157 is an equidigital number, since it uses as much as digits as its factorization.

72652157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 35.

The square root of 72652157 is about 8523.6234665780. The cubic root of 72652157 is about 417.2690479265.

The spelling of 72652157 in words is "seventy-two million, six hundred fifty-two thousand, one hundred fifty-seven".