45552240 has 80 divisors (see below), whose sum is σ = 156909600. Its totient is φ = 12146688.

The previous prime is 45552239. The next prime is 45552263. The reversal of 45552240 is 4225554.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8385 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (1961370).

Almost surely, 2^45552240 is an apocalyptic number.

45552240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45552240 is an abundant number, since it is smaller than the sum of its proper divisors (111357360).

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

45552240 is a wasteful number, since it uses less digits than its factorization.

45552240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111 (or 21099 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 45552240 is about 6749.2399572100. The cubic root of 45552240 is about 357.1384252402.

Adding to 45552240 its reverse (4225554), we get a palindrome (49777794).

The spelling of 45552240 in words is "forty-five million, five hundred fifty-two thousand, two hundred forty".