45057751 has 4 divisors (see below), whose sum is σ = 45102904. Its totient is φ = 45012600.

The previous prime is 45057743. The next prime is 45057757. The reversal of 45057751 is 15775054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45057751 - 2³ = 45057743 is a prime.

It is a super-4 number, since 4×45057751⁴ (a number of 32 digits) contains 4444 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 (45057757) 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, 21045 + ... + 23086.

It is an arithmetic number, because the mean of its divisors is an integer number (11275726).

Almost surely, 2^45057751 is an apocalyptic number.

45057751 is a deficient number, since it is larger than the sum of its proper divisors (45153).

45057751 is a wasteful number, since it uses less digits than its factorization.

45057751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45152.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 45057751 is about 6712.5070577244. The cubic root of 45057751 is about 355.8414240303.

The spelling of 45057751 in words is "forty-five million, fifty-seven thousand, seven hundred fifty-one".