72887501 has 2 divisors, whose sum is σ = 72887502. Its totient is φ = 72887500.

The previous prime is 72887473. The next prime is 72887567. The reversal of 72887501 is 10578827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 27984100 = 6701^2 + 5290^2 .

It is a cyclic number.

It is not a de Polignac number, because 72887501 - 2¹⁰ = 72886477 is a prime.

It is equal to p_4277846 and since 72887501 and 4277846 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72880501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36443750 + 36443751.

It is an arithmetic number, because the mean of its divisors is an integer number (36443751).

Almost surely, 2^72887501 is an apocalyptic number.

It is an amenable number.

72887501 is a deficient number, since it is larger than the sum of its proper divisors (1).

72887501 is an equidigital number, since it uses as much as digits as its factorization.

72887501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 72887501 is about 8537.4177009210. The cubic root of 72887501 is about 417.7191190849.

The spelling of 72887501 in words is "seventy-two million, eight hundred eighty-seven thousand, five hundred one".