72762553 has 2 divisors, whose sum is σ = 72762554. Its totient is φ = 72762552.

The previous prime is 72762527. The next prime is 72762563. The reversal of 72762553 is 35526727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38340864 + 34421689 = 6192^2 + 5867^2 .

It is an emirp because it is prime and its reverse (35526727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72762553 - 2¹³ = 72754361 is a prime.

It is not a weakly prime, because it can be changed into another prime (72762563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36381276 + 36381277.

It is an arithmetic number, because the mean of its divisors is an integer number (36381277).

Almost surely, 2^72762553 is an apocalyptic number.

It is an amenable number.

72762553 is a deficient number, since it is larger than the sum of its proper divisors (1).

72762553 is an equidigital number, since it uses as much as digits as its factorization.

72762553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 37.

The square root of 72762553 is about 8530.0968927674. The cubic root of 72762553 is about 417.4802897456.

The spelling of 72762553 in words is "seventy-two million, seven hundred sixty-two thousand, five hundred fifty-three".