281533151 has 2 divisors, whose sum is σ = 281533152. Its totient is φ = 281533150.

The previous prime is 281533139. The next prime is 281533159. The reversal of 281533151 is 151335182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281533151 is a prime.

It is a super-2 number, since 2×281533151² = 158521830223977602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281533159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140766575 + 140766576.

It is an arithmetic number, because the mean of its divisors is an integer number (140766576).

Almost surely, 2^281533151 is an apocalyptic number.

281533151 is a deficient number, since it is larger than the sum of its proper divisors (1).

281533151 is an equidigital number, since it uses as much as digits as its factorization.

281533151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 281533151 is about 16778.9496393547. The cubic root of 281533151 is about 655.4051460807.

The spelling of 281533151 in words is "two hundred eighty-one million, five hundred thirty-three thousand, one hundred fifty-one".