45217637 has 4 divisors (see below), whose sum is σ = 47877516. Its totient is φ = 42557760.

The previous prime is 45217633. The next prime is 45217657. The reversal of 45217637 is 73671254.

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 36372961 + 8844676 = 6031^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 45217637 - 2² = 45217633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45217597 and 45217606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45217633) 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, 1329914 + ... + 1329947.

It is an arithmetic number, because the mean of its divisors is an integer number (11969379).

Almost surely, 2^45217637 is an apocalyptic number.

It is an amenable number.

45217637 is a deficient number, since it is larger than the sum of its proper divisors (2659879).

45217637 is a wasteful number, since it uses less digits than its factorization.

45217637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659878.

The product of its digits is 35280, while the sum is 35.

The square root of 45217637 is about 6724.4060704273. The cubic root of 45217637 is about 356.2618244972.

It can be divided in two parts, 45217 and 637, that added together give a palindrome (45854).

The spelling of 45217637 in words is "forty-five million, two hundred seventeen thousand, six hundred thirty-seven".