45047790 has 48 divisors (see below), whose sum is σ = 124018128. Its totient is φ = 11305728.

The previous prime is 45047767. The next prime is 45047791. The reversal of 45047790 is 9774054.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45047791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13192 + ... + 16251.

It is an arithmetic number, because the mean of its divisors is an integer number (2583711).

Almost surely, 2^45047790 is an apocalyptic number.

45047790 is an abundant number, since it is smaller than the sum of its proper divisors (78970338).

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

45047790 is a wasteful number, since it uses less digits than its factorization.

45047790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29473 (or 29470 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 45047790 is about 6711.7650435634. The cubic root of 45047790 is about 355.8151999247.

The spelling of 45047790 in words is "forty-five million, forty-seven thousand, seven hundred ninety".