73775251 has 4 divisors (see below), whose sum is σ = 80482104. Its totient is φ = 67068400.

The previous prime is 73775249. The next prime is 73775263. The reversal of 73775251 is 15257737.

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 73775251 - 2¹ = 73775249 is a prime.

It is a super-2 number, since 2×73775251² = 10885575320226002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73775251.

It is not an unprimeable number, because it can be changed into a prime (73775201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353410 + ... + 3353431.

It is an arithmetic number, because the mean of its divisors is an integer number (20120526).

Almost surely, 2^73775251 is an apocalyptic number.

73775251 is a deficient number, since it is larger than the sum of its proper divisors (6706853).

73775251 is a wasteful number, since it uses less digits than its factorization.

73775251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706852.

The product of its digits is 51450, while the sum is 37.

The square root of 73775251 is about 8589.2520628981. The cubic root of 73775251 is about 419.4081819616.

The spelling of 73775251 in words is "seventy-three million, seven hundred seventy-five thousand, two hundred fifty-one".