45390553 has 4 divisors (see below), whose sum is σ = 48882148. Its totient is φ = 41898960.

The previous prime is 45390551. The next prime is 45390559. The reversal of 45390553 is 35509354.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 42994249 = 1548^2 + 6557^2 .

It is a cyclic number.

It is not a de Polignac number, because 45390553 - 2¹ = 45390551 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (45390551) 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, 1745778 + ... + 1745803.

It is an arithmetic number, because the mean of its divisors is an integer number (12220537).

Almost surely, 2^45390553 is an apocalyptic number.

It is an amenable number.

45390553 is a deficient number, since it is larger than the sum of its proper divisors (3491595).

45390553 is a wasteful number, since it uses less digits than its factorization.

45390553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491594.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 45390553 is about 6737.2511456825. The cubic root of 45390553 is about 356.7153717903.

The spelling of 45390553 in words is "forty-five million, three hundred ninety thousand, five hundred fifty-three".