55754335221 has 48 divisors (see below), whose sum is σ = 83188239552. Its totient is φ = 33179328000.

The previous prime is 55754335199. The next prime is 55754335237. The reversal of 55754335221 is 12253345755.

It is a happy number.

It is not a de Polignac number, because 55754335221 - 2⁶ = 55754335157 is a prime.

It is a super-2 number, since 2×55754335221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55754335271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2189241 + ... + 2214561.

It is an arithmetic number, because the mean of its divisors is an integer number (1733088324).

Almost surely, 2^55754335221 is an apocalyptic number.

It is an amenable number.

55754335221 is a deficient number, since it is larger than the sum of its proper divisors (27433904331).

55754335221 is a wasteful number, since it uses less digits than its factorization.

55754335221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25494 (or 25481 counting only the distinct ones).

The product of its digits is 630000, while the sum is 42.

The spelling of 55754335221 in words is "fifty-five billion, seven hundred fifty-four million, three hundred thirty-five thousand, two hundred twenty-one".