75251965 has 8 divisors (see below), whose sum is σ = 91131480. Its totient is φ = 59648832.

The previous prime is 75251887. The next prime is 75251971. The reversal of 75251965 is 56915257.

It can be written as a sum of positive squares in 4 ways, for example, as 412164 + 74839801 = 642^2 + 8651^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 75251965 - 2¹⁵ = 75219197 is a prime.

It is a super-2 number, since 2×75251965² = 11325716472722450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68494 + ... + 69583.

It is an arithmetic number, because the mean of its divisors is an integer number (11391435).

Almost surely, 2^75251965 is an apocalyptic number.

It is an amenable number.

75251965 is a deficient number, since it is larger than the sum of its proper divisors (15879515).

75251965 is a wasteful number, since it uses less digits than its factorization.

75251965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138191.

The product of its digits is 94500, while the sum is 40.

The square root of 75251965 is about 8674.7890464264. The cubic root of 75251965 is about 422.1880614739.

The spelling of 75251965 in words is "seventy-five million, two hundred fifty-one thousand, nine hundred sixty-five".