101551044 has 24 divisors (see below), whose sum is σ = 270803008. Its totient is φ = 29014560.

The previous prime is 101551027. The next prime is 101551061. The reversal of 101551044 is 440155101.

It is an interprime number because it is at equal distance from previous prime (101551027) and next prime (101551061).

It is a super-2 number, since 2×101551044² = 20625229074979872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 101551044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604387 + ... + 604554.

Almost surely, 2^101551044 is an apocalyptic number.

101551044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

101551044 is an abundant number, since it is smaller than the sum of its proper divisors (169251964).

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

101551044 is a wasteful number, since it uses less digits than its factorization.

101551044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208955 (or 1208953 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 101551044 is about 10077.2537925766. The cubic root of 101551044 is about 466.5463515229.

The spelling of 101551044 in words is "one hundred one million, five hundred fifty-one thousand, forty-four".