45000251 has 8 divisors (see below), whose sum is σ = 47708544. Its totient is φ = 42370560.

The previous prime is 45000239. The next prime is 45000271. The reversal of 45000251 is 15200054.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45000251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45000211) 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, 18470 + ... + 20763.

It is an arithmetic number, because the mean of its divisors is an integer number (5963568).

Almost surely, 2^45000251 is an apocalyptic number.

45000251 is a deficient number, since it is larger than the sum of its proper divisors (2708293).

45000251 is a wasteful number, since it uses less digits than its factorization.

45000251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 45000251 is about 6708.2226409087. Note that the first 3 decimals coincide. The cubic root of 45000251 is about 355.6899917665.

The spelling of 45000251 in words is "forty-five million, two hundred fifty-one", and thus it is an aban number.