55351650 has 48 divisors (see below), whose sum is σ = 137741184. Its totient is φ = 14710080.

The previous prime is 55351631. The next prime is 55351657. The reversal of 55351650 is 5615355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55351657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69052 + ... + 69848.

It is an arithmetic number, because the mean of its divisors is an integer number (2869608).

Almost surely, 2^55351650 is an apocalyptic number.

55351650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55351650 is an abundant number, since it is smaller than the sum of its proper divisors (82389534).

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

55351650 is a wasteful number, since it uses less digits than its factorization.

55351650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 55351650 is about 7439.8689504587. The cubic root of 55351650 is about 381.1040146979.

The spelling of 55351650 in words is "fifty-five million, three hundred fifty-one thousand, six hundred fifty".