45277731 has 16 divisors (see below), whose sum is σ = 69995520. Its totient is φ = 28872360.

The previous prime is 45277723. The next prime is 45277747. The reversal of 45277731 is 13777254.

It is not a de Polignac number, because 45277731 - 2³ = 45277723 is a prime.

It is a super-2 number, since 2×45277731² = 4100145849016722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45277711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35835 + ... + 37076.

It is an arithmetic number, because the mean of its divisors is an integer number (4374720).

Almost surely, 2^45277731 is an apocalyptic number.

45277731 is a deficient number, since it is larger than the sum of its proper divisors (24717789).

45277731 is a wasteful number, since it uses less digits than its factorization.

45277731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72943 (or 72937 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 45277731 is about 6728.8729368298. The cubic root of 45277731 is about 356.4195779924.

The spelling of 45277731 in words is "forty-five million, two hundred seventy-seven thousand, seven hundred thirty-one".