45129977 has 8 divisors (see below), whose sum is σ = 46084680. Its totient is φ = 44179200.

The previous prime is 45129967. The next prime is 45129989. The reversal of 45129977 is 77992154.

It can be written as a sum of positive squares in 4 ways, for example, as 226576 + 44903401 = 476^2 + 6701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45129977 - 2²⁴ = 28352761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45129907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36977 + ... + 38177.

It is an arithmetic number, because the mean of its divisors is an integer number (5760585).

Almost surely, 2^45129977 is an apocalyptic number.

It is an amenable number.

45129977 is a deficient number, since it is larger than the sum of its proper divisors (954703).

45129977 is a wasteful number, since it uses less digits than its factorization.

45129977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its digits is 158760, while the sum is 44.

The square root of 45129977 is about 6717.8848605793. The cubic root of 45129977 is about 356.0314563165.

The spelling of 45129977 in words is "forty-five million, one hundred twenty-nine thousand, nine hundred seventy-seven".