55342512521 has 4 divisors (see below), whose sum is σ = 58597954452. Its totient is φ = 52087070592.

The previous prime is 55342512469. The next prime is 55342512527. The reversal of 55342512521 is 12521524355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17599736896 + 37742775625 = 132664^2 + 194275^2 .

It is a cyclic number.

It is not a de Polignac number, because 55342512521 - 2¹⁴ = 55342496137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55342512527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627720940 + ... + 1627720973.

It is an arithmetic number, because the mean of its divisors is an integer number (14649488613).

Almost surely, 2^55342512521 is an apocalyptic number.

It is an amenable number.

55342512521 is a deficient number, since it is larger than the sum of its proper divisors (3255441931).

55342512521 is a wasteful number, since it uses less digits than its factorization.

55342512521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255441930.

The product of its digits is 60000, while the sum is 35.

The spelling of 55342512521 in words is "fifty-five billion, three hundred forty-two million, five hundred twelve thousand, five hundred twenty-one".