45309953 has 4 divisors (see below), whose sum is σ = 48795348. Its totient is φ = 41824560.

The previous prime is 45309907. The next prime is 45309959. The reversal of 45309953 is 35990354.

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 24039409 + 21270544 = 4903^2 + 4612^2 .

It is a cyclic number.

It is not a de Polignac number, because 45309953 - 2⁸ = 45309697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45309959) 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, 1742678 + ... + 1742703.

It is an arithmetic number, because the mean of its divisors is an integer number (12198837).

It is a Proth number, since it is equal to 5531 ⋅ 2¹³ + 1 and 5531 < 2¹³.

Almost surely, 2^45309953 is an apocalyptic number.

It is an amenable number.

45309953 is a deficient number, since it is larger than the sum of its proper divisors (3485395).

45309953 is a wasteful number, since it uses less digits than its factorization.

45309953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485394.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 45309953 is about 6731.2668198490. The cubic root of 45309953 is about 356.5041068776.

The spelling of 45309953 in words is "forty-five million, three hundred nine thousand, nine hundred fifty-three".