155630847 has 4 divisors (see below), whose sum is σ = 207507800. Its totient is φ = 103753896.

The previous prime is 155630821. The next prime is 155630861. The reversal of 155630847 is 748036551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748036551 = 3 ⋅249345517.

It is not a de Polignac number, because 155630847 - 2¹⁰ = 155629823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155630897) 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, 25938472 + ... + 25938477.

It is an arithmetic number, because the mean of its divisors is an integer number (51876950).

Almost surely, 2^155630847 is an apocalyptic number.

155630847 is a deficient number, since it is larger than the sum of its proper divisors (51876953).

155630847 is an equidigital number, since it uses as much as digits as its factorization.

155630847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51876952.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 155630847 is about 12475.2092968415. The cubic root of 155630847 is about 537.8963042316.

The spelling of 155630847 in words is "one hundred fifty-five million, six hundred thirty thousand, eight hundred forty-seven".