55207152 has 240 divisors, whose sum is σ = 207986688. Its totient is φ = 13201920.

The previous prime is 55207133. The next prime is 55207157. The reversal of 55207152 is 25170255.

It is a happy number.

It is a super-2 number, since 2×55207152² = 6095659263902208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55207157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143953 + ... + 144335.

Almost surely, 2^55207152 is an apocalyptic number.

55207152 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55207152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103993344).

55207152 is an abundant number, since it is smaller than the sum of its proper divisors (152779536).

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

55207152 is a wasteful number, since it uses less digits than its factorization.

55207152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55207152 is about 7430.1515462338. The cubic root of 55207152 is about 380.7720959121.

The spelling of 55207152 in words is "fifty-five million, two hundred seven thousand, one hundred fifty-two".