45157905 has 56 divisors (see below), whose sum is σ = 87588648. Its totient is φ = 22208256.

The previous prime is 45157883. The next prime is 45157919. The reversal of 45157905 is 50975154.

It can be written as a sum of positive squares in 4 ways, for example, as 321489 + 44836416 = 567^2 + 6696^2 .

It is not a de Polignac number, because 45157905 - 2⁶ = 45157841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45157905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 46909 + ... + 47861.

It is an arithmetic number, because the mean of its divisors is an integer number (1564083).

Almost surely, 2^45157905 is an apocalyptic number.

45157905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45157905 is a deficient number, since it is larger than the sum of its proper divisors (42430743).

45157905 is an equidigital number, since it uses as much as digits as its factorization.

45157905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 45157905 is about 6719.9631695419. The cubic root of 45157905 is about 356.1048827232.

The spelling of 45157905 in words is "forty-five million, one hundred fifty-seven thousand, nine hundred five".