72401575 has 6 divisors (see below), whose sum is σ = 89777984. Its totient is φ = 57921240.

The previous prime is 72401569. The next prime is 72401587. The reversal of 72401575 is 57510427.

It is not a de Polignac number, because 72401575 - 2¹³ = 72393383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1448007 + ... + 1448056.

Almost surely, 2^72401575 is an apocalyptic number.

72401575 is a deficient number, since it is larger than the sum of its proper divisors (17376409).

72401575 is a wasteful number, since it uses less digits than its factorization.

72401575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896073 (or 2896068 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 72401575 is about 8508.9115050046. The cubic root of 72401575 is about 416.7887659945.

The spelling of 72401575 in words is "seventy-two million, four hundred one thousand, five hundred seventy-five".