53490071 has 2 divisors, whose sum is σ = 53490072. Its totient is φ = 53490070.

The previous prime is 53490061. The next prime is 53490077. The reversal of 53490071 is 17009435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53490071 - 2¹⁸ = 53227927 is a prime.

It is a super-2 number, since 2×53490071² = 5722375391170082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53490077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26745035 + 26745036.

It is an arithmetic number, because the mean of its divisors is an integer number (26745036).

Almost surely, 2^53490071 is an apocalyptic number.

53490071 is a deficient number, since it is larger than the sum of its proper divisors (1).

53490071 is an equidigital number, since it uses as much as digits as its factorization.

53490071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 53490071 is about 7313.6906552027. The cubic root of 53490071 is about 376.7827903985.

The spelling of 53490071 in words is "fifty-three million, four hundred ninety thousand, seventy-one".