748268251 has 4 divisors (see below), whose sum is σ = 748324872. Its totient is φ = 748211632.

The previous prime is 748268239. The next prime is 748268281. The reversal of 748268251 is 152862847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748268251 is a prime.

It is a super-3 number, since 3×748268251³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 748268198 and 748268207.

It is not an unprimeable number, because it can be changed into a prime (748268231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216 + ... + 38818.

It is an arithmetic number, because the mean of its divisors is an integer number (187081218).

Almost surely, 2^748268251 is an apocalyptic number.

748268251 is the 17301-st centered pentagonal number.

748268251 is a deficient number, since it is larger than the sum of its proper divisors (56621).

748268251 is a wasteful number, since it uses less digits than its factorization.

748268251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56620.

The product of its digits is 215040, while the sum is 43.

The square root of 748268251 is about 27354.4923367260. The cubic root of 748268251 is about 907.8604693351.

The spelling of 748268251 in words is "seven hundred forty-eight million, two hundred sixty-eight thousand, two hundred fifty-one".