45387257 has 16 divisors (see below), whose sum is σ = 50165760. Its totient is φ = 40871952.

The previous prime is 45387217. The next prime is 45387269. The reversal of 45387257 is 75278354.

It is a cyclic number.

It is not a de Polignac number, because 45387257 - 2¹⁰ = 45386233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45387217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123488 + ... + 123854.

It is an arithmetic number, because the mean of its divisors is an integer number (3135360).

Almost surely, 2^45387257 is an apocalyptic number.

It is an amenable number.

45387257 is a deficient number, since it is larger than the sum of its proper divisors (4778503).

45387257 is a wasteful number, since it uses less digits than its factorization.

45387257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 235200, while the sum is 41.

The square root of 45387257 is about 6737.0065310938. The cubic root of 45387257 is about 356.7067373774.

The spelling of 45387257 in words is "forty-five million, three hundred eighty-seven thousand, two hundred fifty-seven".