71621152 has 12 divisors (see below), whose sum is σ = 141004206. Its totient is φ = 35810560.

The previous prime is 71621141. The next prime is 71621161. The reversal of 71621152 is 25112617.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 33131536 = 6204^2 + 5756^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119049 + ... + 1119112.

Almost surely, 2^71621152 is an apocalyptic number.

It is an amenable number.

71621152 is a deficient number, since it is larger than the sum of its proper divisors (69383054).

71621152 is a wasteful number, since it uses less digits than its factorization.

71621152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238171 (or 2238163 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 71621152 is about 8462.9280984775. The cubic root of 71621152 is about 415.2858184930.

Adding to 71621152 its reverse (25112617), we get a palindrome (96733769).

The spelling of 71621152 in words is "seventy-one million, six hundred twenty-one thousand, one hundred fifty-two".