72300557 has 8 divisors (see below), whose sum is σ = 82923456. Its totient is φ = 61751232.

The previous prime is 72300551. The next prime is 72300559. The reversal of 72300557 is 75500327.

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 72300557 - 2⁶ = 72300493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72300551) 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, 16268 + ... + 20229.

It is an arithmetic number, because the mean of its divisors is an integer number (10365432).

Almost surely, 2^72300557 is an apocalyptic number.

It is an amenable number.

72300557 is a deficient number, since it is larger than the sum of its proper divisors (10622899).

72300557 is a wasteful number, since it uses less digits than its factorization.

72300557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36787.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 72300557 is about 8502.9734211039. The cubic root of 72300557 is about 416.5948348349.

The spelling of 72300557 in words is "seventy-two million, three hundred thousand, five hundred fifty-seven".