139553503 has 2 divisors, whose sum is σ = 139553504. Its totient is φ = 139553502.

The previous prime is 139553483. The next prime is 139553507. The reversal of 139553503 is 305355931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139553503 - 2¹³ = 139545311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139553507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69776751 + 69776752.

It is an arithmetic number, because the mean of its divisors is an integer number (69776752).

Almost surely, 2^139553503 is an apocalyptic number.

139553503 is a deficient number, since it is larger than the sum of its proper divisors (1).

139553503 is an equidigital number, since it uses as much as digits as its factorization.

139553503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30375, while the sum is 34.

The square root of 139553503 is about 11813.2765564851. The cubic root of 139553503 is about 518.6968144437.

The spelling of 139553503 in words is "one hundred thirty-nine million, five hundred fifty-three thousand, five hundred three".