228551553 has 48 divisors (see below), whose sum is σ = 367061760. Its totient is φ = 136401408.

The previous prime is 228551537. The next prime is 228551563. The reversal of 228551553 is 355155822.

228551553 is a `hidden beast` number, since 22 + 85 + 5 + 1 + 553 = 666.

It is not a de Polignac number, because 228551553 - 2⁴ = 228551537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228551563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 265638 + ... + 266496.

It is an arithmetic number, because the mean of its divisors is an integer number (7647120).

Almost surely, 2^228551553 is an apocalyptic number.

It is an amenable number.

228551553 is a deficient number, since it is larger than the sum of its proper divisors (138510207).

228551553 is a wasteful number, since it uses less digits than its factorization.

228551553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 963 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 228551553 is about 15117.9215833394. The cubic root of 228551553 is about 611.4036947749.

The spelling of 228551553 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, five hundred fifty-three".