745743251 has 8 divisors (see below), whose sum is σ = 835526064. Its totient is φ = 659625120.

The previous prime is 745743227. The next prime is 745743287. The reversal of 745743251 is 152347547.

745743251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 745743251 - 2¹⁴ = 745726867 is a prime.

It is a super-2 number, since 2×745743251² = 1112265992824098002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745746251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915740 + ... + 916553.

It is an arithmetic number, because the mean of its divisors is an integer number (104440758).

Almost surely, 2^745743251 is an apocalyptic number.

745743251 is a deficient number, since it is larger than the sum of its proper divisors (89782813).

745743251 is a wasteful number, since it uses less digits than its factorization.

745743251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832341.

The product of its digits is 117600, while the sum is 38.

The square root of 745743251 is about 27308.3000386329. The cubic root of 745743251 is about 906.8381394403.

The spelling of 745743251 in words is "seven hundred forty-five million, seven hundred forty-three thousand, two hundred fifty-one".