45251140 has 48 divisors (see below), whose sum is σ = 105162624. Its totient is φ = 16217600.

The previous prime is 45251123. The next prime is 45251153. The reversal of 45251140 is 4115254.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 14172 + ... + 17068.

It is an arithmetic number, because the mean of its divisors is an integer number (2190888).

Almost surely, 2^45251140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45251140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52581312).

45251140 is an abundant number, since it is smaller than the sum of its proper divisors (59911484).

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

45251140 is a wasteful number, since it uses less digits than its factorization.

45251140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 45251140 is about 6726.8967585358. The cubic root of 45251140 is about 356.3497908605.

Adding to 45251140 its reverse (4115254), we get a palindrome (49366394).

It can be divided in two parts, 4525 and 1140, that added together give a palindrome (5665).

The spelling of 45251140 in words is "forty-five million, two hundred fifty-one thousand, one hundred forty".