55227421536 has 96 divisors (see below), whose sum is σ = 165761342208. Its totient is φ = 15771732480.

The previous prime is 55227421471. The next prime is 55227421573. The reversal of 55227421536 is 63512472255.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474011 + ... + 1511013.

It is an arithmetic number, because the mean of its divisors is an integer number (1726680648).

Almost surely, 2^55227421536 is an apocalyptic number.

55227421536 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55227421536 is an abundant number, since it is smaller than the sum of its proper divisors (110533920672).

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

55227421536 is a wasteful number, since it uses less digits than its factorization.

55227421536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39244 (or 39236 counting only the distinct ones).

The product of its digits is 504000, while the sum is 42.

The spelling of 55227421536 in words is "fifty-five billion, two hundred twenty-seven million, four hundred twenty-one thousand, five hundred thirty-six".