72875501 has 2 divisors, whose sum is σ = 72875502. Its totient is φ = 72875500.

The previous prime is 72875483. The next prime is 72875503. The reversal of 72875501 is 10557827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69322276 + 3553225 = 8326^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 72875501 - 2⁶ = 72875437 is a prime.

Together with 72875503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72875503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36437750 + 36437751.

It is an arithmetic number, because the mean of its divisors is an integer number (36437751).

Almost surely, 2^72875501 is an apocalyptic number.

It is an amenable number.

72875501 is a deficient number, since it is larger than the sum of its proper divisors (1).

72875501 is an equidigital number, since it uses as much as digits as its factorization.

72875501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 72875501 is about 8536.7148833729. The cubic root of 72875501 is about 417.6961937800.

The spelling of 72875501 in words is "seventy-two million, eight hundred seventy-five thousand, five hundred one".