55421532001 has 16 divisors (see below), whose sum is σ = 61122428928. Its totient is φ = 49832571600.

The previous prime is 55421531981. The next prime is 55421532029. The reversal of 55421532001 is 10023512455.

It is a cyclic number.

It is not a de Polignac number, because 55421532001 - 2⁹ = 55421531489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55421532071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705376 + ... + 779998.

It is an arithmetic number, because the mean of its divisors is an integer number (3820151808).

Almost surely, 2^55421532001 is an apocalyptic number.

It is an amenable number.

55421532001 is a deficient number, since it is larger than the sum of its proper divisors (5700896927).

55421532001 is a wasteful number, since it uses less digits than its factorization.

55421532001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75372.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 55421532001 in words is "fifty-five billion, four hundred twenty-one million, five hundred thirty-two thousand, one".