139745253 has 16 divisors (see below), whose sum is σ = 200071296. Its totient is φ = 86446080.

The previous prime is 139745251. The next prime is 139745257. The reversal of 139745253 is 352547931.

It is a happy number.

139745253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139745253 - 2¹ = 139745251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139745251) 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, 15676 + ... + 22917.

It is an arithmetic number, because the mean of its divisors is an integer number (12504456).

Almost surely, 2^139745253 is an apocalyptic number.

It is an amenable number.

139745253 is a deficient number, since it is larger than the sum of its proper divisors (60326043).

139745253 is a wasteful number, since it uses less digits than its factorization.

139745253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38684.

The product of its digits is 113400, while the sum is 39.

The square root of 139745253 is about 11821.3896391245. The cubic root of 139745253 is about 518.9342731799.

The spelling of 139745253 in words is "one hundred thirty-nine million, seven hundred forty-five thousand, two hundred fifty-three".