53019997 has 2 divisors, whose sum is σ = 53019998. Its totient is φ = 53019996.

The previous prime is 53019983. The next prime is 53020003. The reversal of 53019997 is 79991035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34175716 + 18844281 = 5846^2 + 4341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53019997 is a prime.

It is a super-2 number, since 2×53019997² = 5622240163760018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53019907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26509998 + 26509999.

It is an arithmetic number, because the mean of its divisors is an integer number (26509999).

Almost surely, 2^53019997 is an apocalyptic number.

It is an amenable number.

53019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

53019997 is an equidigital number, since it uses as much as digits as its factorization.

53019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 53019997 is about 7281.4831593570. The cubic root of 53019997 is about 375.6758112720.

The spelling of 53019997 in words is "fifty-three million, nineteen thousand, nine hundred ninety-seven".