72150877 has 2 divisors, whose sum is σ = 72150878. Its totient is φ = 72150876.

The previous prime is 72150853. The next prime is 72150887. The reversal of 72150877 is 77805127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70207641 + 1943236 = 8379^2 + 1394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72150877 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 (72150887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36075438 + 36075439.

It is an arithmetic number, because the mean of its divisors is an integer number (36075439).

Almost surely, 2^72150877 is an apocalyptic number.

It is an amenable number.

72150877 is a deficient number, since it is larger than the sum of its proper divisors (1).

72150877 is an equidigital number, since it uses as much as digits as its factorization.

72150877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 72150877 is about 8494.1672340495. The cubic root of 72150877 is about 416.3071515042.

The spelling of 72150877 in words is "seventy-two million, one hundred fifty thousand, eight hundred seventy-seven".