55342253421 has 24 divisors (see below), whose sum is σ = 98386229760. Its totient is φ = 29191517856.

The previous prime is 55342253399. The next prime is 55342253437. The reversal of 55342253421 is 12435224355.

55342253421 is a `hidden beast` number, since 5 + 5 + 3 + 4 + 225 + 3 + 421 = 666.

It is not a de Polignac number, because 55342253421 - 2⁵ = 55342253389 is a prime.

It is a super-5 number, since 5×55342253421⁵ (a number of 55 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55342253521) 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, 33785661 + ... + 33787298.

It is an arithmetic number, because the mean of its divisors is an integer number (4099426240).

Almost surely, 2^55342253421 is an apocalyptic number.

It is an amenable number.

55342253421 is a deficient number, since it is larger than the sum of its proper divisors (43043976339).

55342253421 is a wasteful number, since it uses less digits than its factorization.

55342253421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67572985 (or 67572982 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 55342253421 its reverse (12435224355), we get a palindrome (67777477776).

The spelling of 55342253421 in words is "fifty-five billion, three hundred forty-two million, two hundred fifty-three thousand, four hundred twenty-one".