55069207621 has 8 divisors (see below), whose sum is σ = 56355735744. Its totient is φ = 53782945440.

The previous prime is 55069207619. The next prime is 55069207651. The reversal of 55069207621 is 12670296055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55069207621 - 2¹ = 55069207619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55069207651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388416 + ... + 510886.

It is an arithmetic number, because the mean of its divisors is an integer number (7044466968).

Almost surely, 2^55069207621 is an apocalyptic number.

It is an amenable number.

55069207621 is a deficient number, since it is larger than the sum of its proper divisors (1286528123).

55069207621 is a wasteful number, since it uses less digits than its factorization.

55069207621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132971.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 55069207621 in words is "fifty-five billion, sixty-nine million, two hundred seven thousand, six hundred twenty-one".