71551401 has 8 divisors (see below), whose sum is σ = 96098784. Its totient is φ = 47352480.

The previous prime is 71551399. The next prime is 71551409. The reversal of 71551401 is 10415517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71551401 - 2¹ = 71551399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71551409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86635 + ... + 87456.

It is an arithmetic number, because the mean of its divisors is an integer number (12012348).

Almost surely, 2^71551401 is an apocalyptic number.

It is an amenable number.

71551401 is a deficient number, since it is larger than the sum of its proper divisors (24547383).

71551401 is a wasteful number, since it uses less digits than its factorization.

71551401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174231.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 71551401 is about 8458.8061214334. The cubic root of 71551401 is about 415.1509607085.

Adding to 71551401 its reverse (10415517), we get a palindrome (81966918).

The spelling of 71551401 in words is "seventy-one million, five hundred fifty-one thousand, four hundred one".