45287229 has 16 divisors (see below), whose sum is σ = 65922752. Its totient is φ = 27485568.

The previous prime is 45287219. The next prime is 45287233. The reversal of 45287229 is 92278254.

It is not a de Polignac number, because 45287229 - 2⁵ = 45287197 is a prime.

It is a super-2 number, since 2×45287229² = 4101866220996882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45287219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5107 + ... + 10800.

It is an arithmetic number, because the mean of its divisors is an integer number (4120172).

Almost surely, 2^45287229 is an apocalyptic number.

It is an amenable number.

45287229 is a deficient number, since it is larger than the sum of its proper divisors (20635523).

45287229 is a wasteful number, since it uses less digits than its factorization.

45287229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

The product of its digits is 80640, while the sum is 39.

The square root of 45287229 is about 6729.5786643742. The cubic root of 45287229 is about 356.4444985320. Note that the first 4 decimals are identical.

Subtracting 45287229 from its reverse (92278254), we obtain a square (46991025 = 6855²).

The spelling of 45287229 in words is "forty-five million, two hundred eighty-seven thousand, two hundred twenty-nine".