53020212257 has 2 divisors, whose sum is σ = 53020212258. Its totient is φ = 53020212256.

The previous prime is 53020212241. The next prime is 53020212383. The reversal of 53020212257 is 75221202035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32245025761 + 20775186496 = 179569^2 + 144136^2 .

It is a cyclic number.

It is not a de Polignac number, because 53020212257 - 2⁴ = 53020212241 is a prime.

It is a super-2 number, since 2×53020212257² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53020215257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26510106128 + 26510106129.

It is an arithmetic number, because the mean of its divisors is an integer number (26510106129).

Almost surely, 2^53020212257 is an apocalyptic number.

It is an amenable number.

53020212257 is a deficient number, since it is larger than the sum of its proper divisors (1).

53020212257 is an equidigital number, since it uses as much as digits as its factorization.

53020212257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 53020212257 in words is "fifty-three billion, twenty million, two hundred twelve thousand, two hundred fifty-seven".