220499451 has 12 divisors (see below), whose sum is σ = 324509328. Its totient is φ = 144225744.

The previous prime is 220499429. The next prime is 220499471. The reversal of 220499451 is 154994022.

It is not a de Polignac number, because 220499451 - 2¹³ = 220491259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220499471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230655 + ... + 231608.

It is an arithmetic number, because the mean of its divisors is an integer number (27042444).

Almost surely, 2^220499451 is an apocalyptic number.

220499451 is a deficient number, since it is larger than the sum of its proper divisors (104009877).

220499451 is a wasteful number, since it uses less digits than its factorization.

220499451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462322 (or 462319 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 220499451 is about 14849.2239191144. The cubic root of 220499451 is about 604.1375604041.

The spelling of 220499451 in words is "two hundred twenty million, four hundred ninety-nine thousand, four hundred fifty-one".