39545121 has 32 divisors (see below), whose sum is σ = 66152448. Its totient is φ = 20413440.

The previous prime is 39545071. The next prime is 39545123. The reversal of 39545121 is 12154593.

It is not a de Polignac number, because 39545121 - 2¹⁹ = 39020833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39545123) 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, 44140 + ... + 45026.

It is an arithmetic number, because the mean of its divisors is an integer number (2067264).

Almost surely, 2^39545121 is an apocalyptic number.

It is an amenable number.

39545121 is a deficient number, since it is larger than the sum of its proper divisors (26607327).

39545121 is a wasteful number, since it uses less digits than its factorization.

39545121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its digits is 5400, while the sum is 30.

The square root of 39545121 is about 6288.4911544821. The cubic root of 39545121 is about 340.6938569772.

The spelling of 39545121 in words is "thirty-nine million, five hundred forty-five thousand, one hundred twenty-one".