139278053 has 2 divisors, whose sum is σ = 139278054. Its totient is φ = 139278052.

The previous prime is 139278049. The next prime is 139278079. The reversal of 139278053 is 350872931.

139278053 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., 132319009 + 6959044 = 11503^2 + 2638^2 .

It is an emirp because it is prime and its reverse (350872931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139278053 - 2² = 139278049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139277998 and 139278016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139278253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69639026 + 69639027.

It is an arithmetic number, because the mean of its divisors is an integer number (69639027).

Almost surely, 2^139278053 is an apocalyptic number.

It is an amenable number.

139278053 is a deficient number, since it is larger than the sum of its proper divisors (1).

139278053 is an equidigital number, since it uses as much as digits as its factorization.

139278053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 139278053 is about 11801.6123051048. The cubic root of 139278053 is about 518.3553226152.

The spelling of 139278053 in words is "one hundred thirty-nine million, two hundred seventy-eight thousand, fifty-three".