55645507450 has 24 divisors (see below), whose sum is σ = 111462233148. Its totient is φ = 20546033280.

The previous prime is 55645507441. The next prime is 55645507451. The reversal of 55645507450 is 5470554655.

It is a Cunningham number, because it is equal to 235893²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 8231751441 + 47413756009 = 90729^2 + 217747^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55645507450.

It is not an unprimeable number, because it can be changed into a prime (55645507451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42803587 + ... + 42804886.

Almost surely, 2^55645507450 is an apocalyptic number.

55645507450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55645507450 is an abundant number, since it is smaller than the sum of its proper divisors (55816725698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55645507450 is a wasteful number, since it uses less digits than its factorization.

55645507450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85608498 (or 85608493 counting only the distinct ones).

The product of its (nonzero) digits is 2100000, while the sum is 46.

The spelling of 55645507450 in words is "fifty-five billion, six hundred forty-five million, five hundred seven thousand, four hundred fifty".