100155474 has 16 divisors (see below), whose sum is σ = 222567840. Its totient is φ = 33385140.

The previous prime is 100155469. The next prime is 100155487. The reversal of 100155474 is 474551001.

It is a happy number.

100155474 is a `hidden beast` number, since 100 + 1 + 554 + 7 + 4 = 666.

It is a super-2 number, since 2×100155474² = 20062237944329352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 7 ways as a sum of consecutive naturals, for example, 927312 + ... + 927419.

It is an arithmetic number, because the mean of its divisors is an integer number (13910490).

Almost surely, 2^100155474 is an apocalyptic number.

100155474 is an abundant number, since it is smaller than the sum of its proper divisors (122412366).

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

100155474 is a wasteful number, since it uses less digits than its factorization.

100155474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854742 (or 1854736 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 100155474 is about 10007.7706808260. The cubic root of 100155474 is about 464.3993075993.

The spelling of 100155474 in words is "one hundred million, one hundred fifty-five thousand, four hundred seventy-four".