45553551 has 8 divisors (see below), whose sum is σ = 60780720. Its totient is φ = 30347712.

The previous prime is 45553517. The next prime is 45553559. The reversal of 45553551 is 15535554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45553551 - 2¹⁹ = 45029263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45553559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (7597590).

Almost surely, 2^45553551 is an apocalyptic number.

45553551 is a deficient number, since it is larger than the sum of its proper divisors (15227169).

45553551 is a wasteful number, since it uses less digits than its factorization.

45553551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665.

The product of its digits is 37500, while the sum is 33.

The square root of 45553551 is about 6749.3370785582. The cubic root of 45553551 is about 357.1418513724.

It can be divided in two parts, 4 and 5553551, that added together give a palindrome (5553555).

The spelling of 45553551 in words is "forty-five million, five hundred fifty-three thousand, five hundred fifty-one".