745055431 has 4 divisors (see below), whose sum is σ = 745263592. Its totient is φ = 744847272.

The previous prime is 745055411. The next prime is 745055449. The reversal of 745055431 is 134550547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134550547 = 239 ⋅562973.

It is a cyclic number.

It is not a de Polignac number, because 745055431 - 2¹⁷ = 744924359 is a prime.

It is a super-2 number, since 2×745055431² = 1110215190525191522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745055411) 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, 98616 + ... + 105901.

It is an arithmetic number, because the mean of its divisors is an integer number (186315898).

Almost surely, 2^745055431 is an apocalyptic number.

745055431 is a deficient number, since it is larger than the sum of its proper divisors (208161).

745055431 is a wasteful number, since it uses less digits than its factorization.

745055431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208160.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 745055431 is about 27295.7035263794. The cubic root of 745055431 is about 906.5592528971.

It can be divided in two parts, 74 and 5055431, that added together give a palindrome (5055505).

The spelling of 745055431 in words is "seven hundred forty-five million, fifty-five thousand, four hundred thirty-one".