228285751 has 2 divisors, whose sum is σ = 228285752. Its totient is φ = 228285750.

The previous prime is 228285737. The next prime is 228285763. The reversal of 228285751 is 157582822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228285751 - 2¹³ = 228277559 is a prime.

It is a super-2 number, since 2×228285751² = 104228768219268002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228285791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114142875 + 114142876.

It is an arithmetic number, because the mean of its divisors is an integer number (114142876).

Almost surely, 2^228285751 is an apocalyptic number.

228285751 is a deficient number, since it is larger than the sum of its proper divisors (1).

228285751 is an equidigital number, since it uses as much as digits as its factorization.

228285751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 40.

The square root of 228285751 is about 15109.1280688199. The cubic root of 228285751 is about 611.1665850823.

The spelling of 228285751 in words is "two hundred twenty-eight million, two hundred eighty-five thousand, seven hundred fifty-one".