101501604 has 18 divisors (see below), whose sum is σ = 256573590. Its totient is φ = 33833856.

The previous prime is 101501593. The next prime is 101501641. The reversal of 101501604 is 406105101.

101501604 is a `hidden beast` number, since 10 + 1 + 50 + 1 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 11289600 = 9498^2 + 3360^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×101501604² = 20605151229145632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1409709 + ... + 1409780.

Almost surely, 2^101501604 is an apocalyptic number.

It is an amenable number.

101501604 is an abundant number, since it is smaller than the sum of its proper divisors (155071986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101501604 is a wasteful number, since it uses less digits than its factorization.

101501604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819499 (or 2819494 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 101501604 is about 10074.8004446738. The cubic root of 101501604 is about 466.4706267283.

Adding to 101501604 its reverse (406105101), we get a palindrome (507606705).

The spelling of 101501604 in words is "one hundred one million, five hundred one thousand, six hundred four".