45772213 has 4 divisors (see below), whose sum is σ = 47248768. Its totient is φ = 44295660.

The previous prime is 45772183. The next prime is 45772217. The reversal of 45772213 is 31227754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45772213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1476523 = 45772213 / (4 + 5 + 7 + 7 + 2 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45772217) 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, 738231 + ... + 738292.

It is an arithmetic number, because the mean of its divisors is an integer number (11812192).

Almost surely, 2^45772213 is an apocalyptic number.

It is an amenable number.

45772213 is a deficient number, since it is larger than the sum of its proper divisors (1476555).

45772213 is a wasteful number, since it uses less digits than its factorization.

45772213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476554.

The product of its digits is 11760, while the sum is 31.

The square root of 45772213 is about 6765.5164621779. The cubic root of 45772213 is about 357.7123793902.

Adding to 45772213 its reverse (31227754), we get a palindrome (76999967).

The spelling of 45772213 in words is "forty-five million, seven hundred seventy-two thousand, two hundred thirteen".