99572651 has 4 divisors (see below), whose sum is σ = 102784704. Its totient is φ = 96360600.

The previous prime is 99572633. The next prime is 99572659. The reversal of 99572651 is 15627599.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99572651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99572659) 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 in 3 ways as a sum of consecutive naturals, for example, 1605980 + ... + 1606041.

It is an arithmetic number, because the mean of its divisors is an integer number (25696176).

Almost surely, 2^99572651 is an apocalyptic number.

99572651 is a deficient number, since it is larger than the sum of its proper divisors (3212053).

99572651 is a wasteful number, since it uses less digits than its factorization.

99572651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212052.

The product of its digits is 170100, while the sum is 44.

The square root of 99572651 is about 9978.6096726949. The cubic root of 99572651 is about 463.4967464697.

The spelling of 99572651 in words is "ninety-nine million, five hundred seventy-two thousand, six hundred fifty-one".