45513440 has 48 divisors (see below), whose sum is σ = 122889312. Its totient is φ = 15604224.

The previous prime is 45513431. The next prime is 45513451. The reversal of 45513440 is 4431554.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19199 + ... + 21438.

It is an arithmetic number, because the mean of its divisors is an integer number (2560194).

Almost surely, 2^45513440 is an apocalyptic number.

45513440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45513440 is an abundant number, since it is smaller than the sum of its proper divisors (77375872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45513440 is a wasteful number, since it uses less digits than its factorization.

45513440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40659 (or 40651 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 45513440 is about 6746.3649471401. The cubic root of 45513440 is about 357.0369965869.

Adding to 45513440 its reverse (4431554), we get a palindrome (49944994).

The spelling of 45513440 in words is "forty-five million, five hundred thirteen thousand, four hundred forty".