53442397 has 2 divisors, whose sum is σ = 53442398. Its totient is φ = 53442396.

The previous prime is 53442371. The next prime is 53442413. The reversal of 53442397 is 79324435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43639236 + 9803161 = 6606^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 53442397 - 2¹⁹ = 52918109 is a prime.

It is a Chen prime.

It is equal to p_3194929 and since 53442397 and 3194929 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53445397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721198 + 26721199.

It is an arithmetic number, because the mean of its divisors is an integer number (26721199).

Almost surely, 2^53442397 is an apocalyptic number.

It is an amenable number.

53442397 is a deficient number, since it is larger than the sum of its proper divisors (1).

53442397 is an equidigital number, since it uses as much as digits as its factorization.

53442397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 53442397 is about 7310.4306986661. The cubic root of 53442397 is about 376.6708189516.

The spelling of 53442397 in words is "fifty-three million, four hundred forty-two thousand, three hundred ninety-seven".