55015308 has 48 divisors (see below), whose sum is σ = 144780160. Its totient is φ = 18062352.

The previous prime is 55015277. The next prime is 55015309. The reversal of 55015308 is 80351055.

It is a super-2 number, since 2×55015308² = 6053368228669728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (55015309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3435 + ... + 11037.

Almost surely, 2^55015308 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 55015308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72390080).

55015308 is an abundant number, since it is smaller than the sum of its proper divisors (89764852).

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

55015308 is a wasteful number, since it uses less digits than its factorization.

55015308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683 (or 7675 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55015308 is about 7417.2304804421. The cubic root of 55015308 is about 380.3305249829.

The spelling of 55015308 in words is "fifty-five million, fifteen thousand, three hundred eight".