155282047 has 4 divisors (see below), whose sum is σ = 159069456. Its totient is φ = 151494640.

The previous prime is 155281991. The next prime is 155282051. The reversal of 155282047 is 740282551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740282551 = 1979 ⋅374069.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155282047 is a prime.

It is a super-2 number, since 2×155282047² = 48225028241020418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155282447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893643 + ... + 1893724.

It is an arithmetic number, because the mean of its divisors is an integer number (39767364).

Almost surely, 2^155282047 is an apocalyptic number.

155282047 is a deficient number, since it is larger than the sum of its proper divisors (3787409).

155282047 is an equidigital number, since it uses as much as digits as its factorization.

155282047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787408.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 155282047 is about 12461.2217298305. The cubic root of 155282047 is about 537.4941590856.

The spelling of 155282047 in words is "one hundred fifty-five million, two hundred eighty-two thousand, forty-seven".