55047512 has 32 divisors (see below), whose sum is σ = 111812400. Its totient is φ = 25256064.

The previous prime is 55047511. The next prime is 55047521. The reversal of 55047512 is 21574055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55047511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17138 + ... + 20094.

Almost surely, 2^55047512 is an apocalyptic number.

55047512 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 55047512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55906200).

55047512 is an abundant number, since it is smaller than the sum of its proper divisors (56764888).

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

55047512 is a wasteful number, since it uses less digits than its factorization.

55047512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 3151 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55047512 is about 7419.4010539935. The cubic root of 55047512 is about 380.4047211510.

The spelling of 55047512 in words is "fifty-five million, forty-seven thousand, five hundred twelve".