72401497 has 8 divisors (see below), whose sum is σ = 82939136. Its totient is φ = 61912512.

The previous prime is 72401491. The next prime is 72401501. The reversal of 72401497 is 79410427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72401497 - 2¹¹ = 72399449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72401491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8913 + ... + 14974.

It is an arithmetic number, because the mean of its divisors is an integer number (10367392).

Almost surely, 2^72401497 is an apocalyptic number.

It is an amenable number.

72401497 is a deficient number, since it is larger than the sum of its proper divisors (10537639).

72401497 is a wasteful number, since it uses less digits than its factorization.

72401497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24327.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72401497 is about 8508.9069215734. The cubic root of 72401497 is about 416.7886163222.

The spelling of 72401497 in words is "seventy-two million, four hundred one thousand, four hundred ninety-seven".