71918053 has 2 divisors, whose sum is σ = 71918054. Its totient is φ = 71918052.

The previous prime is 71918039. The next prime is 71918069. The reversal of 71918053 is 35081917.

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., 52751169 + 19166884 = 7263^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 71918053 - 2¹³ = 71909861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71918153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35959026 + 35959027.

It is an arithmetic number, because the mean of its divisors is an integer number (35959027).

Almost surely, 2^71918053 is an apocalyptic number.

It is an amenable number.

71918053 is a deficient number, since it is larger than the sum of its proper divisors (1).

71918053 is an equidigital number, since it uses as much as digits as its factorization.

71918053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 71918053 is about 8480.4512262025. The cubic root of 71918053 is about 415.8588744821.

The spelling of 71918053 in words is "seventy-one million, nine hundred eighteen thousand, fifty-three".