71254501 has 2 divisors, whose sum is σ = 71254502. Its totient is φ = 71254500.

The previous prime is 71254481. The next prime is 71254511. The reversal of 71254501 is 10545217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43217476 + 28037025 = 6574^2 + 5295^2 .

It is an emirp because it is prime and its reverse (10545217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71254501 - 2⁷ = 71254373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71254511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35627250 + 35627251.

It is an arithmetic number, because the mean of its divisors is an integer number (35627251).

Almost surely, 2^71254501 is an apocalyptic number.

It is an amenable number.

71254501 is a deficient number, since it is larger than the sum of its proper divisors (1).

71254501 is an equidigital number, since it uses as much as digits as its factorization.

71254501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 71254501 is about 8441.2381200864. The cubic root of 71254501 is about 414.5759465790.

Adding to 71254501 its reverse (10545217), we get a palindrome (81799718).

The spelling of 71254501 in words is "seventy-one million, two hundred fifty-four thousand, five hundred one".