55523998 has 4 divisors (see below), whose sum is σ = 83286000. Its totient is φ = 27761998.

The previous prime is 55523987. The next prime is 55523999. The reversal of 55523998 is 89932555.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55523999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13880998 + ... + 13881001.

It is an arithmetic number, because the mean of its divisors is an integer number (20821500).

Almost surely, 2^55523998 is an apocalyptic number.

55523998 is a deficient number, since it is larger than the sum of its proper divisors (27762002).

55523998 is a wasteful number, since it uses less digits than its factorization.

55523998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27762001.

The product of its digits is 486000, while the sum is 46.

The square root of 55523998 is about 7451.4426791058. The cubic root of 55523998 is about 381.4991517335.

The spelling of 55523998 in words is "fifty-five million, five hundred twenty-three thousand, nine hundred ninety-eight".