228521351 has 2 divisors, whose sum is σ = 228521352. Its totient is φ = 228521350.

The previous prime is 228521339. The next prime is 228521357. The reversal of 228521351 is 153125822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228521351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228521357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114260675 + 114260676.

It is an arithmetic number, because the mean of its divisors is an integer number (114260676).

Almost surely, 2^228521351 is an apocalyptic number.

228521351 is a deficient number, since it is larger than the sum of its proper divisors (1).

228521351 is an equidigital number, since it uses as much as digits as its factorization.

228521351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 228521351 is about 15116.9226696441. The cubic root of 228521351 is about 611.3767622257.

The spelling of 228521351 in words is "two hundred twenty-eight million, five hundred twenty-one thousand, three hundred fifty-one".