870420053 has 2 divisors, whose sum is σ = 870420054. Its totient is φ = 870420052.

The previous prime is 870420029. The next prime is 870420127. The reversal of 870420053 is 350024078.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 807582724 + 62837329 = 28418^2 + 7927^2 .

It is a cyclic number.

It is not a de Polignac number, because 870420053 - 2²⁶ = 803311189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 870419998 and 870420025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870420013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435210026 + 435210027.

It is an arithmetic number, because the mean of its divisors is an integer number (435210027).

Almost surely, 2^870420053 is an apocalyptic number.

It is an amenable number.

870420053 is a deficient number, since it is larger than the sum of its proper divisors (1).

870420053 is an equidigital number, since it uses as much as digits as its factorization.

870420053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 870420053 is about 29502.8821134478. The cubic root of 870420053 is about 954.7938858748.

The spelling of 870420053 in words is "eight hundred seventy million, four hundred twenty thousand, fifty-three".