71445151 has 4 divisors (see below), whose sum is σ = 72349600. Its totient is φ = 70540704.

The previous prime is 71445139. The next prime is 71445161. The reversal of 71445151 is 15154417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71445151 - 2⁵ = 71445119 is a prime.

It is a super-3 number, since 3×71445151³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71445131) 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, 452106 + ... + 452263.

It is an arithmetic number, because the mean of its divisors is an integer number (18087400).

Almost surely, 2^71445151 is an apocalyptic number.

71445151 is a deficient number, since it is larger than the sum of its proper divisors (904449).

71445151 is an equidigital number, since it uses as much as digits as its factorization.

71445151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904448.

The product of its digits is 2800, while the sum is 28.

The square root of 71445151 is about 8452.5233510473. The cubic root of 71445151 is about 414.9453665923.

Adding to 71445151 its reverse (15154417), we get a palindrome (86599568).

The spelling of 71445151 in words is "seventy-one million, four hundred forty-five thousand, one hundred fifty-one".