139997553 has 16 divisors (see below), whose sum is σ = 188326080. Its totient is φ = 92505024.

The previous prime is 139997531. The next prime is 139997591. The reversal of 139997553 is 355799931.

It is not a de Polignac number, because 139997553 - 2⁶ = 139997489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139997496 and 139997505.

It is not an unprimeable number, because it can be changed into a prime (139997593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228075 + ... + 228687.

It is an arithmetic number, because the mean of its divisors is an integer number (11770380).

Almost surely, 2^139997553 is an apocalyptic number.

It is an amenable number.

139997553 is a deficient number, since it is larger than the sum of its proper divisors (48328527).

139997553 is a wasteful number, since it uses less digits than its factorization.

139997553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 1148175, while the sum is 51.

The square root of 139997553 is about 11832.0561611243. The cubic root of 139997553 is about 519.2463849215.

The spelling of 139997553 in words is "one hundred thirty-nine million, nine hundred ninety-seven thousand, five hundred fifty-three".