73752251 has 4 divisors (see below), whose sum is σ = 74159904. Its totient is φ = 73344600.

The previous prime is 73752247. The next prime is 73752257. The reversal of 73752251 is 15225737.

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 73752251 - 2² = 73752247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73752257) 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, 203555 + ... + 203916.

It is an arithmetic number, because the mean of its divisors is an integer number (18539976).

Almost surely, 2^73752251 is an apocalyptic number.

73752251 is a deficient number, since it is larger than the sum of its proper divisors (407653).

73752251 is a wasteful number, since it uses less digits than its factorization.

73752251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407652.

The product of its digits is 14700, while the sum is 32.

The square root of 73752251 is about 8587.9130759458. The cubic root of 73752251 is about 419.3645928596.

Adding to 73752251 its reverse (15225737), we get a palindrome (88977988).

The spelling of 73752251 in words is "seventy-three million, seven hundred fifty-two thousand, two hundred fifty-one".