55537554 has 16 divisors (see below), whose sum is σ = 114658560. Its totient is φ = 17915280.

The previous prime is 55537543. The next prime is 55537567. The reversal of 55537554 is 45573555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149109 + ... + 149480.

It is an arithmetic number, because the mean of its divisors is an integer number (7166160).

Almost surely, 2^55537554 is an apocalyptic number.

55537554 is an abundant number, since it is smaller than the sum of its proper divisors (59121006).

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

55537554 is a wasteful number, since it uses less digits than its factorization.

55537554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298625.

The product of its digits is 262500, while the sum is 39.

The square root of 55537554 is about 7452.3522461032. The cubic root of 55537554 is about 381.5301964582.

The spelling of 55537554 in words is "fifty-five million, five hundred thirty-seven thousand, five hundred fifty-four".