749251 has 4 divisors (see below), whose sum is σ = 751032. Its totient is φ = 747472.

The previous prime is 749249. The next prime is 749257. The reversal of 749251 is 152947.

It is a happy number.

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 749251 - 2¹ = 749249 is a prime.

It is a super-2 number, since 2×749251² = 1122754122002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749257) 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, 135 + ... + 1231.

It is an arithmetic number, because the mean of its divisors is an integer number (187758).

2⁷⁴⁹²⁵¹ is an apocalyptic number.

749251 is a deficient number, since it is larger than the sum of its proper divisors (1781).

749251 is a wasteful number, since it uses less digits than its factorization.

749251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its digits is 2520, while the sum is 28.

The square root of 749251 is about 865.5928604142. The cubic root of 749251 is about 90.8257746050.

It can be divided in two parts, 749 and 251, that added together give a cube (1000 = 10³).

The spelling of 749251 in words is "seven hundred forty-nine thousand, two hundred fifty-one".