33157047 has 16 divisors (see below), whose sum is σ = 55118592. Its totient is φ = 17224320.

The previous prime is 33157031. The next prime is 33157051. The reversal of 33157047 is 74075133.

It is not a de Polignac number, because 33157047 - 2⁴ = 33157031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33157057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71538 + ... + 71999.

It is an arithmetic number, because the mean of its divisors is an integer number (3444912).

Almost surely, 2^33157047 is an apocalyptic number.

33157047 is a deficient number, since it is larger than the sum of its proper divisors (21961545).

33157047 is a wasteful number, since it uses less digits than its factorization.

33157047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143558.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 33157047 is about 5758.2156090233. The cubic root of 33157047 is about 321.2614498283.

It can be divided in two parts, 33 and 157047, that added together give a triangular number (157080 = T₅₆₀).

The spelling of 33157047 in words is "thirty-three million, one hundred fifty-seven thousand, forty-seven".