45551140 has 24 divisors (see below), whose sum is σ = 97228152. Its totient is φ = 17921280.

The previous prime is 45551137. The next prime is 45551153. The reversal of 45551140 is 4115554.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 473344 + 45077796 = 688^2 + 6714^2 .

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, 17449 + ... + 19888.

It is an arithmetic number, because the mean of its divisors is an integer number (4051173).

Almost surely, 2^45551140 is an apocalyptic number.

It is an amenable number.

45551140 is an abundant number, since it is smaller than the sum of its proper divisors (51677012).

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

45551140 is a wasteful number, since it uses less digits than its factorization.

45551140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37407 (or 37405 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 45551140 is about 6749.1584660608. The cubic root of 45551140 is about 357.1355504791.

Adding to 45551140 its reverse (4115554), we get a palindrome (49666694).

The spelling of 45551140 in words is "forty-five million, five hundred fifty-one thousand, one hundred forty".