71514621 has 6 divisors (see below), whose sum is σ = 103298910. Its totient is φ = 47676408.

The previous prime is 71514607. The next prime is 71514629. The reversal of 71514621 is 12641517.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 18020025 = 7314^2 + 4245^2 .

It is not a de Polignac number, because 71514621 - 2⁶ = 71514557 is a prime.

It is a super-2 number, since 2×71514621² = 10228682033547282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71514629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3973026 + ... + 3973043.

It is an arithmetic number, because the mean of its divisors is an integer number (17216485).

Almost surely, 2^71514621 is an apocalyptic number.

It is an amenable number.

71514621 is a deficient number, since it is larger than the sum of its proper divisors (31784289).

71514621 is a wasteful number, since it uses less digits than its factorization.

71514621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946075 (or 7946072 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 71514621 is about 8456.6317763043. The cubic root of 71514621 is about 415.0798143290.

The spelling of 71514621 in words is "seventy-one million, five hundred fourteen thousand, six hundred twenty-one".