220142551 has 2 divisors, whose sum is σ = 220142552. Its totient is φ = 220142550.

The previous prime is 220142543. The next prime is 220142561. The reversal of 220142551 is 155241022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220142551 - 2³ = 220142543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220142521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110071275 + 110071276.

It is an arithmetic number, because the mean of its divisors is an integer number (110071276).

Almost surely, 2^220142551 is an apocalyptic number.

220142551 is a deficient number, since it is larger than the sum of its proper divisors (1).

220142551 is an equidigital number, since it uses as much as digits as its factorization.

220142551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 220142551 is about 14837.2015892486. The cubic root of 220142551 is about 603.8114324080.

Adding to 220142551 its reverse (155241022), we get a palindrome (375383573).

The spelling of 220142551 in words is "two hundred twenty million, one hundred forty-two thousand, five hundred fifty-one".