72150137 has 2 divisors, whose sum is σ = 72150138. Its totient is φ = 72150136.

The previous prime is 72150131. The next prime is 72150167. The reversal of 72150137 is 73105127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62031376 + 10118761 = 7876^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 72150137 - 2⁶ = 72150073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72150131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36075068 + 36075069.

It is an arithmetic number, because the mean of its divisors is an integer number (36075069).

Almost surely, 2^72150137 is an apocalyptic number.

It is an amenable number.

72150137 is a deficient number, since it is larger than the sum of its proper divisors (1).

72150137 is an equidigital number, since it uses as much as digits as its factorization.

72150137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 72150137 is about 8494.1236746353. The cubic root of 72150137 is about 416.3057282444.

The spelling of 72150137 in words is "seventy-two million, one hundred fifty thousand, one hundred thirty-seven".