45051251 has 16 divisors (see below), whose sum is σ = 53437440. Its totient is φ = 37177920.

The previous prime is 45051221. The next prime is 45051263. The reversal of 45051251 is 15215054.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45051251 - 2⁶ = 45051187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45051221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21680 + ... + 23666.

It is an arithmetic number, because the mean of its divisors is an integer number (3339840).

Almost surely, 2^45051251 is an apocalyptic number.

45051251 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45051251 is a deficient number, since it is larger than the sum of its proper divisors (8386189).

45051251 is a wasteful number, since it uses less digits than its factorization.

45051251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 45051251 is about 6712.0228694485. The cubic root of 45051251 is about 355.8243120615.

The spelling of 45051251 in words is "forty-five million, fifty-one thousand, two hundred fifty-one".