55099152 has 60 divisors (see below), whose sum is σ = 159188224. Its totient is φ = 17772480.

The previous prime is 55099151. The next prime is 55099153. The reversal of 55099152 is 25199055.

55099152 is a `hidden beast` number, since 550 + 99 + 15 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (55099151) and next prime (55099153).

It is a super-2 number, since 2×55099152² = 6071833102238208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55099151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708 + ... + 10635.

Almost surely, 2^55099152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55099152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79594112).

55099152 is an abundant number, since it is smaller than the sum of its proper divisors (104089072).

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

55099152 is a wasteful number, since it uses less digits than its factorization.

55099152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388 (or 12379 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 55099152 is about 7422.8803034941. The cubic root of 55099152 is about 380.5236363667.

The spelling of 55099152 in words is "fifty-five million, ninety-nine thousand, one hundred fifty-two".