745181 has 2 divisors, whose sum is σ = 745182. Its totient is φ = 745180.

The previous prime is 745141. The next prime is 745187. The reversal of 745181 is 181547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 241081 = 710^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 745181 - 2⁶ = 745117 is a prime.

It is a super-2 number, since 2×745181² = 1110589445522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372590 + 372591.

It is an arithmetic number, because the mean of its divisors is an integer number (372591).

2⁷⁴⁵¹⁸¹ is an apocalyptic number.

It is an amenable number.

745181 is a deficient number, since it is larger than the sum of its proper divisors (1).

745181 is an equidigital number, since it uses as much as digits as its factorization.

745181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 745181 is about 863.2386691987. The cubic root of 745181 is about 90.6610179463.

The spelling of 745181 in words is "seven hundred forty-five thousand, one hundred eighty-one".