620403053 has 2 divisors, whose sum is σ = 620403054. Its totient is φ = 620403052.

The previous prime is 620402987. The next prime is 620403059. The reversal of 620403053 is 350304026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606242884 + 14160169 = 24622^2 + 3763^2 .

It is a cyclic number.

It is not a de Polignac number, because 620403053 - 2¹² = 620398957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620403059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310201526 + 310201527.

It is an arithmetic number, because the mean of its divisors is an integer number (310201527).

Almost surely, 2^620403053 is an apocalyptic number.

It is an amenable number.

620403053 is a deficient number, since it is larger than the sum of its proper divisors (1).

620403053 is an equidigital number, since it uses as much as digits as its factorization.

620403053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 620403053 is about 24907.8913800426. The cubic root of 620403053 is about 852.8866346779.

Adding to 620403053 its reverse (350304026), we get a palindrome (970707079).

The spelling of 620403053 in words is "six hundred twenty million, four hundred three thousand, fifty-three".