139434553 has 2 divisors, whose sum is σ = 139434554. Its totient is φ = 139434552.

The previous prime is 139434551. The next prime is 139434583. The reversal of 139434553 is 355434931.

139434553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84125584 + 55308969 = 9172^2 + 7437^2 .

It is a cyclic number.

It is not a de Polignac number, because 139434553 - 2¹ = 139434551 is a prime.

Together with 139434551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139434551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69717276 + 69717277.

It is an arithmetic number, because the mean of its divisors is an integer number (69717277).

Almost surely, 2^139434553 is an apocalyptic number.

It is an amenable number.

139434553 is a deficient number, since it is larger than the sum of its proper divisors (1).

139434553 is an equidigital number, since it uses as much as digits as its factorization.

139434553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 37.

The square root of 139434553 is about 11808.2408935455. The cubic root of 139434553 is about 518.5494001952.

It can be divided in two parts, 13943 and 4553, that added together give a square (18496 = 136²).

The spelling of 139434553 in words is "one hundred thirty-nine million, four hundred thirty-four thousand, five hundred fifty-three".