45550531 has 16 divisors (see below), whose sum is σ = 52617600. Its totient is φ = 39057408.

The previous prime is 45550529. The next prime is 45550579. The reversal of 45550531 is 13505554.

It is not a de Polignac number, because 45550531 - 2¹ = 45550529 is a prime.

It is a super-2 number, since 2×45550531² = 4149701748763922, which 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 45550531.

It is not an unprimeable number, because it can be changed into a prime (45550031) 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, 16155 + ... + 18763.

It is an arithmetic number, because the mean of its divisors is an integer number (3288600).

Almost surely, 2^45550531 is an apocalyptic number.

45550531 is a deficient number, since it is larger than the sum of its proper divisors (7067069).

45550531 is a wasteful number, since it uses less digits than its factorization.

45550531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 45550531 is about 6749.1133491741. The cubic root of 45550531 is about 357.1339588869.

The spelling of 45550531 in words is "forty-five million, five hundred fifty thousand, five hundred thirty-one".