63291145 has 8 divisors (see below), whose sum is σ = 76701960. Its totient is φ = 50131200.

The previous prime is 63291143. The next prime is 63291199. The reversal of 63291145 is 54119236.

It can be written as a sum of positive squares in 4 ways, for example, as 34012224 + 29278921 = 5832^2 + 5411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63291145 - 2¹ = 63291143 is a prime.

It is a super-2 number, since 2×63291145² = 8011538070822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63291143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62160 + ... + 63169.

It is an arithmetic number, because the mean of its divisors is an integer number (9587745).

Almost surely, 2^63291145 is an apocalyptic number.

It is an amenable number.

63291145 is a deficient number, since it is larger than the sum of its proper divisors (13410815).

63291145 is a wasteful number, since it uses less digits than its factorization.

63291145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125435.

The product of its digits is 6480, while the sum is 31.

The square root of 63291145 is about 7955.5732037359. The cubic root of 63291145 is about 398.5177327443.

It can be divided in two parts, 63291 and 145, that added together give a palindrome (63436).

The spelling of 63291145 in words is "sixty-three million, two hundred ninety-one thousand, one hundred forty-five".