45541997 has 4 divisors (see below), whose sum is σ = 48220956. Its totient is φ = 42863040.

The previous prime is 45541981. The next prime is 45542009. The reversal of 45541997 is 79914554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14394436 + 31147561 = 3794^2 + 5581^2 .

It is a cyclic number.

It is not a de Polignac number, because 45541997 - 2⁴ = 45541981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45541927) 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, 1339454 + ... + 1339487.

It is an arithmetic number, because the mean of its divisors is an integer number (12055239).

Almost surely, 2^45541997 is an apocalyptic number.

It is an amenable number.

45541997 is a deficient number, since it is larger than the sum of its proper divisors (2678959).

45541997 is a wasteful number, since it uses less digits than its factorization.

45541997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678958.

The product of its digits is 226800, while the sum is 44.

The square root of 45541997 is about 6748.4810883635. The cubic root of 45541997 is about 357.1116541958. Note that the first 3 decimals are identical.

The spelling of 45541997 in words is "forty-five million, five hundred forty-one thousand, nine hundred ninety-seven".