55562154021 has 24 divisors (see below), whose sum is σ = 91359118656. Its totient is φ = 32209943040.

The previous prime is 55562153989. The next prime is 55562154029. The reversal of 55562154021 is 12045126555.

55562154021 is a `hidden beast` number, since 5 + 5 + 5 + 621 + 5 + 4 + 0 + 21 = 666.

55562154021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55562154021 - 2⁵ = 55562153989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55562154029) 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, 12198460 + ... + 12203013.

It is an arithmetic number, because the mean of its divisors is an integer number (3806629944).

Almost surely, 2^55562154021 is an apocalyptic number.

It is an amenable number.

55562154021 is a deficient number, since it is larger than the sum of its proper divisors (35796964635).

55562154021 is a wasteful number, since it uses less digits than its factorization.

55562154021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24401513 (or 24401510 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 55562154021 in words is "fifty-five billion, five hundred sixty-two million, one hundred fifty-four thousand, twenty-one".