45520055551 has 4 divisors (see below), whose sum is σ = 45520544592. Its totient is φ = 45519566512.

The previous prime is 45520055509. The next prime is 45520055563. The reversal of 45520055551 is 15555002554.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45520055551 - 2¹³ = 45520047359 is a prime.

It is a super-2 number, since 2×45520055551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45520055551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45520055501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56926 + ... + 307051.

It is an arithmetic number, because the mean of its divisors is an integer number (11380136148).

Almost surely, 2^45520055551 is an apocalyptic number.

45520055551 is a deficient number, since it is larger than the sum of its proper divisors (489041).

45520055551 is a wasteful number, since it uses less digits than its factorization.

45520055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489040.

The product of its (nonzero) digits is 125000, while the sum is 37.

The spelling of 45520055551 in words is "forty-five billion, five hundred twenty million, fifty-five thousand, five hundred fifty-one".