421256053 has 2 divisors, whose sum is σ = 421256054. Its totient is φ = 421256052.

The previous prime is 421256029. The next prime is 421256081. The reversal of 421256053 is 350652124.

It is an a-pointer prime, because the next prime (421256081) can be obtained adding 421256053 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225060004 + 196196049 = 15002^2 + 14007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421256053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421256023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210628026 + 210628027.

It is an arithmetic number, because the mean of its divisors is an integer number (210628027).

Almost surely, 2^421256053 is an apocalyptic number.

It is an amenable number.

421256053 is a deficient number, since it is larger than the sum of its proper divisors (1).

421256053 is an equidigital number, since it uses as much as digits as its factorization.

421256053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 421256053 is about 20524.5232100529. The cubic root of 421256053 is about 749.6330370728.

The spelling of 421256053 in words is "four hundred twenty-one million, two hundred fifty-six thousand, fifty-three".