45491457 has 8 divisors (see below), whose sum is σ = 66169440. Its totient is φ = 27570560.

The previous prime is 45491443. The next prime is 45491489. The reversal of 45491457 is 75419454.

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 45491457 - 2⁶ = 45491393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45491417) 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, 689232 + ... + 689297.

It is an arithmetic number, because the mean of its divisors is an integer number (8271180).

Almost surely, 2^45491457 is an apocalyptic number.

It is an amenable number.

45491457 is a deficient number, since it is larger than the sum of its proper divisors (20677983).

45491457 is a wasteful number, since it uses less digits than its factorization.

45491457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378543.

The product of its digits is 100800, while the sum is 39.

The square root of 45491457 is about 6744.7355025976. The cubic root of 45491457 is about 356.9795043511.

It can be divided in two parts, 4549 and 1457, that added together give a palindrome (6006).

The spelling of 45491457 in words is "forty-five million, four hundred ninety-one thousand, four hundred fifty-seven".