55033272 has 144 divisors (see below), whose sum is σ = 182730600. Its totient is φ = 14878080.

The previous prime is 55033261. The next prime is 55033283. The reversal of 55033272 is 27233055.

It is an interprime number because it is at equal distance from previous prime (55033261) and next prime (55033283).

It is a super-2 number, since 2×55033272² = 6057322054051968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66622 + ... + 67442.

Almost surely, 2^55033272 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 55033272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91365300).

55033272 is an abundant number, since it is smaller than the sum of its proper divisors (127697328).

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

55033272 is a wasteful number, since it uses less digits than its factorization.

55033272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 55033272 is about 7418.4413457276. The cubic root of 55033272 is about 380.3719165779.

The spelling of 55033272 in words is "fifty-five million, thirty-three thousand, two hundred seventy-two".