745157 has 4 divisors (see below), whose sum is σ = 851616. Its totient is φ = 638700.

The previous prime is 745141. The next prime is 745181. The reversal of 745157 is 751547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751547 = 131 ⋅5737.

It is a cyclic number.

It is not a de Polignac number, because 745157 - 2⁴ = 745141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745117) 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, 53219 + ... + 53232.

It is an arithmetic number, because the mean of its divisors is an integer number (212904).

2⁷⁴⁵¹⁵⁷ is an apocalyptic number.

It is an amenable number.

745157 is a deficient number, since it is larger than the sum of its proper divisors (106459).

745157 is a wasteful number, since it uses less digits than its factorization.

745157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106458.

The product of its digits is 4900, while the sum is 29.

The square root of 745157 is about 863.2247679486. The cubic root of 745157 is about 90.6600446312.

Adding to 745157 its product of digits (4900), we get a palindrome (750057).

The spelling of 745157 in words is "seven hundred forty-five thousand, one hundred fifty-seven".