71541623 has 2 divisors, whose sum is σ = 71541624. Its totient is φ = 71541622.

The previous prime is 71541611. The next prime is 71541629. The reversal of 71541623 is 32614517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71541623 - 2⁴ = 71541607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71541629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35770811 + 35770812.

It is an arithmetic number, because the mean of its divisors is an integer number (35770812).

Almost surely, 2^71541623 is an apocalyptic number.

71541623 is a deficient number, since it is larger than the sum of its proper divisors (1).

71541623 is an equidigital number, since it uses as much as digits as its factorization.

71541623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 71541623 is about 8458.2281241404. The cubic root of 71541623 is about 415.1320487517.

The spelling of 71541623 in words is "seventy-one million, five hundred forty-one thousand, six hundred twenty-three".