100987497 has 24 divisors (see below), whose sum is σ = 166335624. Its totient is φ = 58489344.

The previous prime is 100987487. The next prime is 100987571. The reversal of 100987497 is 794789001.

It can be written as a sum of positive squares in 4 ways, for example, as 21706281 + 79281216 = 4659^2 + 8904^2 .

It is not a de Polignac number, because 100987497 - 2⁶ = 100987433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100987477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23398 + ... + 27375.

It is an arithmetic number, because the mean of its divisors is an integer number (6930651).

Almost surely, 2^100987497 is an apocalyptic number.

100987497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

100987497 is a deficient number, since it is larger than the sum of its proper divisors (65348127).

100987497 is a wasteful number, since it uses less digits than its factorization.

100987497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50809 (or 50806 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 100987497 is about 10049.2535543691. The cubic root of 100987497 is about 465.6817332910.

The spelling of 100987497 in words is "one hundred million, nine hundred eighty-seven thousand, four hundred ninety-seven".