55021853407 has 8 divisors (see below), whose sum is σ = 56800663040. Its totient is φ = 53243288280.

The previous prime is 55021853401. The next prime is 55021853423. The reversal of 55021853407 is 70435812055.

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 55021853407 - 2¹¹ = 55021851359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55021853407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55021853401) 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, 469444 + ... + 574822.

It is an arithmetic number, because the mean of its divisors is an integer number (7100082880).

Almost surely, 2^55021853407 is an apocalyptic number.

55021853407 is a deficient number, since it is larger than the sum of its proper divisors (1778809633).

55021853407 is a wasteful number, since it uses less digits than its factorization.

55021853407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122253.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 55021853407 in words is "fifty-five billion, twenty-one million, eight hundred fifty-three thousand, four hundred seven".