45206251 has 4 divisors (see below), whose sum is σ = 45221904. Its totient is φ = 45190600.

The previous prime is 45206221. The next prime is 45206269. The reversal of 45206251 is 15260254.

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 45206251 - 2¹⁵ = 45173483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45206221) 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, 2095 + ... + 9736.

It is an arithmetic number, because the mean of its divisors is an integer number (11305476).

Almost surely, 2^45206251 is an apocalyptic number.

45206251 is a deficient number, since it is larger than the sum of its proper divisors (15653).

45206251 is a wasteful number, since it uses less digits than its factorization.

45206251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15652.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 45206251 is about 6723.5593996038. The cubic root of 45206251 is about 356.2319192219.

The spelling of 45206251 in words is "forty-five million, two hundred six thousand, two hundred fifty-one".