71052401 has 12 divisors (see below), whose sum is σ = 87515748. Its totient is φ = 57318912.

The previous prime is 71052379. The next prime is 71052409. The reversal of 71052401 is 10425017.

It can be written as a sum of positive squares in 2 ways, for example, as 19571776 + 51480625 = 4424^2 + 7175^2 .

It is not a de Polignac number, because 71052401 - 2⁶ = 71052337 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71052409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41816 + ... + 43481.

It is an arithmetic number, because the mean of its divisors is an integer number (7292979).

Almost surely, 2^71052401 is an apocalyptic number.

It is an amenable number.

71052401 is a deficient number, since it is larger than the sum of its proper divisors (16463347).

71052401 is a wasteful number, since it uses less digits than its factorization.

71052401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85328 (or 85321 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 71052401 is about 8429.2586269493. The cubic root of 71052401 is about 414.1836198399.

Adding to 71052401 its reverse (10425017), we get a palindrome (81477418).

The spelling of 71052401 in words is "seventy-one million, fifty-two thousand, four hundred one".