55098550 has 96 divisors (see below), whose sum is σ = 118742400. Its totient is φ = 18869760.

The previous prime is 55098509. The next prime is 55098551. The reversal of 55098550 is 5589055.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55098551) 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, 697411 + ... + 697489.

It is an arithmetic number, because the mean of its divisors is an integer number (1236900).

Almost surely, 2^55098550 is an apocalyptic number.

55098550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55098550 is an abundant number, since it is smaller than the sum of its proper divisors (63643850).

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

55098550 is a wasteful number, since it uses less digits than its factorization.

55098550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 37.

The square root of 55098550 is about 7422.8397530864. The cubic root of 55098550 is about 380.5222505253.

The spelling of 55098550 in words is "fifty-five million, ninety-eight thousand, five hundred fifty".