45155240 has 32 divisors (see below), whose sum is σ = 109415880. Its totient is φ = 16672512.

The previous prime is 45155239. The next prime is 45155269. The reversal of 45155240 is 4255154.

It can be written as a sum of positive squares in 4 ways, for example, as 34409956 + 10745284 = 5866^2 + 3278^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 42899 + ... + 43938.

Almost surely, 2^45155240 is an apocalyptic number.

45155240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45155240 is an abundant number, since it is smaller than the sum of its proper divisors (64260640).

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

45155240 is a wasteful number, since it uses less digits than its factorization.

45155240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86861 (or 86857 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 45155240 is about 6719.7648768391. The cubic root of 45155240 is about 356.0978773925.

The spelling of 45155240 in words is "forty-five million, one hundred fifty-five thousand, two hundred forty".