228013501 has 2 divisors, whose sum is σ = 228013502. Its totient is φ = 228013500.

The previous prime is 228013493. The next prime is 228013507. The reversal of 228013501 is 105310822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161264601 + 66748900 = 12699^2 + 8170^2 .

It is a cyclic number.

It is not a de Polignac number, because 228013501 - 2³ = 228013493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228013507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114006750 + 114006751.

It is an arithmetic number, because the mean of its divisors is an integer number (114006751).

Almost surely, 2^228013501 is an apocalyptic number.

It is an amenable number.

228013501 is a deficient number, since it is larger than the sum of its proper divisors (1).

228013501 is an equidigital number, since it uses as much as digits as its factorization.

228013501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 228013501 is about 15100.1159267073. The cubic root of 228013501 is about 610.9235325474.

The spelling of 228013501 in words is "two hundred twenty-eight million, thirteen thousand, five hundred one".