45551810554 has 4 divisors (see below), whose sum is σ = 68327715834. Its totient is φ = 22775905276.

The previous prime is 45551810483. The next prime is 45551810561. The reversal of 45551810554 is 45501815554.

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

It can be written as a sum of positive squares in only one way, i.e., 29058316225 + 16493494329 = 170465^2 + 128427^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45551810554.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387952637 + ... + 11387952640.

Almost surely, 2^45551810554 is an apocalyptic number.

45551810554 is a deficient number, since it is larger than the sum of its proper divisors (22775905280).

45551810554 is a wasteful number, since it uses less digits than its factorization.

45551810554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22775905279.

The product of its (nonzero) digits is 400000, while the sum is 43.

Subtracting from 45551810554 its reverse (45501815554), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 45551810554 in words is "forty-five billion, five hundred fifty-one million, eight hundred ten thousand, five hundred fifty-four".