72877573 has 2 divisors, whose sum is σ = 72877574. Its totient is φ = 72877572.

The previous prime is 72877549. The next prime is 72877577. The reversal of 72877573 is 37577827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50438404 + 22439169 = 7102^2 + 4737^2 .

It is a cyclic number.

It is not a de Polignac number, because 72877573 - 2⁹ = 72877061 is a prime.

It is a super-2 number, since 2×72877573² = 10622281292740658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72877577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36438786 + 36438787.

It is an arithmetic number, because the mean of its divisors is an integer number (36438787).

Almost surely, 2^72877573 is an apocalyptic number.

It is an amenable number.

72877573 is a deficient number, since it is larger than the sum of its proper divisors (1).

72877573 is an equidigital number, since it uses as much as digits as its factorization.

72877573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576240, while the sum is 46.

The square root of 72877573 is about 8536.8362406690. The cubic root of 72877573 is about 417.7001523958.

The spelling of 72877573 in words is "seventy-two million, eight hundred seventy-seven thousand, five hundred seventy-three".