100551955 has 16 divisors (see below), whose sum is σ = 139170240. Its totient is φ = 68314752.

The previous prime is 100551949. The next prime is 100552013. The reversal of 100551955 is 559155001.

It is a cyclic number.

It is not a de Polignac number, because 100551955 - 2³ = 100551947 is a prime.

It is a super-2 number, since 2×100551955² = 20221391308644050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9364 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (8698140).

Almost surely, 2^100551955 is an apocalyptic number.

100551955 is a deficient number, since it is larger than the sum of its proper divisors (38618285).

100551955 is a wasteful number, since it uses less digits than its factorization.

100551955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26478.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 100551955 is about 10027.5597729458. The cubic root of 100551955 is about 465.0112996830.

The spelling of 100551955 in words is "one hundred million, five hundred fifty-one thousand, nine hundred fifty-five".