45125551 has 8 divisors (see below), whose sum is σ = 47613680. Its totient is φ = 42648768.

The previous prime is 45125519. The next prime is 45125569. The reversal of 45125551 is 15552154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45125551 - 2⁵ = 45125519 is a prime.

It is a super-5 number, since 5×45125551⁵ (a number of 39 digits) contains 55555 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 (45125251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6085 + ... + 11281.

It is an arithmetic number, because the mean of its divisors is an integer number (5951710).

Almost surely, 2^45125551 is an apocalyptic number.

45125551 is a deficient number, since it is larger than the sum of its proper divisors (2488129).

45125551 is a wasteful number, since it uses less digits than its factorization.

45125551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673.

The product of its digits is 5000, while the sum is 28.

The square root of 45125551 is about 6717.5554333403. Note that the first 3 decimals coincide. The cubic root of 45125551 is about 356.0198169964.

The spelling of 45125551 in words is "forty-five million, one hundred twenty-five thousand, five hundred fifty-one".