45391653 has 6 divisors (see below), whose sum is σ = 65565734. Its totient is φ = 30261096.

The previous prime is 45391609. The next prime is 45391663. The reversal of 45391653 is 35619354.

It can be written as a sum of positive squares in only one way, i.e., 44715969 + 675684 = 6687^2 + 822^2 .

It is not a de Polignac number, because 45391653 - 2¹³ = 45383461 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 (45391603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2521750 + ... + 2521767.

Almost surely, 2^45391653 is an apocalyptic number.

It is an amenable number.

45391653 is a deficient number, since it is larger than the sum of its proper divisors (20174081).

45391653 is a wasteful number, since it uses less digits than its factorization.

45391653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043523 (or 5043520 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 45391653 is about 6737.3327808562. The cubic root of 45391653 is about 356.7182533278.

The spelling of 45391653 in words is "forty-five million, three hundred ninety-one thousand, six hundred fifty-three".