45269981 has 8 divisors (see below), whose sum is σ = 46577664. Its totient is φ = 43966800.

The previous prime is 45269971. The next prime is 45269999. The reversal of 45269981 is 18996254.

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 45269981 - 2¹⁰ = 45268957 is a prime.

It is a super-2 number, since 2×45269981² = 4098742359480722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45269921) 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, 38756 + ... + 39906.

It is an arithmetic number, because the mean of its divisors is an integer number (5822208).

Almost surely, 2^45269981 is an apocalyptic number.

It is an amenable number.

45269981 is a deficient number, since it is larger than the sum of its proper divisors (1307683).

45269981 is a wasteful number, since it uses less digits than its factorization.

45269981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its digits is 155520, while the sum is 44.

The square root of 45269981 is about 6728.2970356547. The cubic root of 45269981 is about 356.3992412155.

The spelling of 45269981 in words is "forty-five million, two hundred sixty-nine thousand, nine hundred eighty-one".