45001251 has 20 divisors (see below), whose sum is σ = 67753224. Its totient is φ = 29764800.

The previous prime is 45001249. The next prime is 45001259. The reversal of 45001251 is 15210054.

45001251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45001251 - 2¹ = 45001249 is a prime.

It is a super-2 number, since 2×45001251² = 4050225183130002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45001259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8491 + ... + 12731.

Almost surely, 2^45001251 is an apocalyptic number.

45001251 is a deficient number, since it is larger than the sum of its proper divisors (22751973).

45001251 is a wasteful number, since it uses less digits than its factorization.

45001251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4375 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 45001251 is about 6708.2971758860. The cubic root of 45001251 is about 355.6926264729.

The spelling of 45001251 in words is "forty-five million, one thousand, two hundred fifty-one".