45511555 has 16 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 34391520.

The previous prime is 45511553. The next prime is 45511561. The reversal of 45511555 is 55511554.

It is not a de Polignac number, because 45511555 - 2¹ = 45511553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45511553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53826 + ... + 54664.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^45511555 is an apocalyptic number.

45511555 is a deficient number, since it is larger than the sum of its proper divisors (12146045).

45511555 is a wasteful number, since it uses less digits than its factorization.

45511555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its digits is 12500, while the sum is 31.

The square root of 45511555 is about 6746.2252408291. The cubic root of 45511555 is about 357.0320674639.

Subtracting 45511555 from its reverse (55511554), we obtain a palindrome (9999999).

It can be divided in two parts, 455 and 11555, that multiplied together give a palindrome (5257525).

The spelling of 45511555 in words is "forty-five million, five hundred eleven thousand, five hundred fifty-five".