45210981 has 8 divisors (see below), whose sum is σ = 60312384. Its totient is φ = 30125120.

The previous prime is 45210967. The next prime is 45210983. The reversal of 45210981 is 18901254.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45210981 - 2⁶ = 45210917 is a prime.

It is a super-2 number, since 2×45210981² = 4088065605964722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45210983) 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, 9280 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (7539048).

Almost surely, 2^45210981 is an apocalyptic number.

It is an amenable number.

45210981 is a deficient number, since it is larger than the sum of its proper divisors (15101403).

45210981 is a wasteful number, since it uses less digits than its factorization.

45210981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 45210981 is about 6723.9111386157. The cubic root of 45210981 is about 356.2443431543.

The spelling of 45210981 in words is "forty-five million, two hundred ten thousand, nine hundred eighty-one".