71020901 has 16 divisors (see below), whose sum is σ = 84478464. Its totient is φ = 58441344.

The previous prime is 71020891. The next prime is 71020909. The reversal of 71020901 is 10902017.

It is a cyclic number.

It is not a de Polignac number, because 71020901 - 2¹⁰ = 71019877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71020909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15401 + ... + 19473.

It is an arithmetic number, because the mean of its divisors is an integer number (5279904).

Almost surely, 2^71020901 is an apocalyptic number.

It is an amenable number.

71020901 is a deficient number, since it is larger than the sum of its proper divisors (13457563).

71020901 is a wasteful number, since it uses less digits than its factorization.

71020901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 71020901 is about 8427.3899280857. The cubic root of 71020901 is about 414.1224034590.

Adding to 71020901 its reverse (10902017), we get a palindrome (81922918).

The spelling of 71020901 in words is "seventy-one million, twenty thousand, nine hundred one".