39457545 has 32 divisors (see below), whose sum is σ = 66424320. Its totient is φ = 19971840.

The previous prime is 39457541. The next prime is 39457559. The reversal of 39457545 is 54575493.

It is not a de Polignac number, because 39457545 - 2² = 39457541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39457497 and 39457506.

It is not an unprimeable number, because it can be changed into a prime (39457541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25792 + ... + 27278.

It is an arithmetic number, because the mean of its divisors is an integer number (2075760).

Almost surely, 2^39457545 is an apocalyptic number.

It is an amenable number.

39457545 is a deficient number, since it is larger than the sum of its proper divisors (26966775).

39457545 is a wasteful number, since it uses less digits than its factorization.

39457545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its digits is 378000, while the sum is 42.

The square root of 39457545 is about 6281.5240984971. The cubic root of 39457545 is about 340.4421726832.

The spelling of 39457545 in words is "thirty-nine million, four hundred fifty-seven thousand, five hundred forty-five".