99251601 has 32 divisors (see below), whose sum is σ = 144149760. Its totient is φ = 60555264.

The previous prime is 99251569. The next prime is 99251617. The reversal of 99251601 is 10615299.

99251601 = 489² + 490² + ... + 745².

It is not a de Polignac number, because 99251601 - 2⁵ = 99251569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99251641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386065 + ... + 386321.

It is an arithmetic number, because the mean of its divisors is an integer number (4504680).

Almost surely, 2^99251601 is an apocalyptic number.

It is an amenable number.

99251601 is a deficient number, since it is larger than the sum of its proper divisors (44898159).

99251601 is a wasteful number, since it uses less digits than its factorization.

99251601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 99251601 is about 9962.5097741483. The cubic root of 99251601 is about 462.9980625227.

The spelling of 99251601 in words is "ninety-nine million, two hundred fifty-one thousand, six hundred one".