71432401 has 4 divisors (see below), whose sum is σ = 73736704. Its totient is φ = 69128100.

The previous prime is 71432371. The next prime is 71432407. The reversal of 71432401 is 10423417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10423417 = 761 ⋅13697.

It is a cyclic number.

It is not a de Polignac number, because 71432401 - 2⁵ = 71432369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71432407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152105 + ... + 1152166.

It is an arithmetic number, because the mean of its divisors is an integer number (18434176).

Almost surely, 2^71432401 is an apocalyptic number.

It is an amenable number.

71432401 is a deficient number, since it is larger than the sum of its proper divisors (2304303).

71432401 is a wasteful number, since it uses less digits than its factorization.

71432401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304302.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71432401 is about 8451.7691047496. The cubic root of 71432401 is about 414.9206816039.

Adding to 71432401 its reverse (10423417), we get a palindrome (81855818).

The spelling of 71432401 in words is "seventy-one million, four hundred thirty-two thousand, four hundred one".