72955537 has 2 divisors, whose sum is σ = 72955538. Its totient is φ = 72955536.

The previous prime is 72955513. The next prime is 72955559. The reversal of 72955537 is 73555927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46730896 + 26224641 = 6836^2 + 5121^2 .

It is a cyclic number.

It is not a de Polignac number, because 72955537 - 2¹⁵ = 72922769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72955493 and 72955502.

It is not a weakly prime, because it can be changed into another prime (72955577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36477768 + 36477769.

It is an arithmetic number, because the mean of its divisors is an integer number (36477769).

Almost surely, 2^72955537 is an apocalyptic number.

It is an amenable number.

72955537 is a deficient number, since it is larger than the sum of its proper divisors (1).

72955537 is an equidigital number, since it uses as much as digits as its factorization.

72955537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 330750, while the sum is 43.

The square root of 72955537 is about 8541.4013487249. The cubic root of 72955537 is about 417.8490503691.

The spelling of 72955537 in words is "seventy-two million, nine hundred fifty-five thousand, five hundred thirty-seven".