33780051 has 16 divisors (see below), whose sum is σ = 50304000. Its totient is φ = 22403304.

The previous prime is 33780013. The next prime is 33780067. The reversal of 33780051 is 15008733.

It is not a de Polignac number, because 33780051 - 2⁷ = 33779923 is a prime.

It is a super-2 number, since 2×33780051² = 2282183691125202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 33779997 and 33780024.

It is not an unprimeable number, because it can be changed into a prime (33780091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2230 + ... + 8516.

It is an arithmetic number, because the mean of its divisors is an integer number (3144000).

Almost surely, 2^33780051 is an apocalyptic number.

33780051 is a deficient number, since it is larger than the sum of its proper divisors (16523949).

33780051 is a wasteful number, since it uses less digits than its factorization.

33780051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495 (or 6489 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 33780051 is about 5812.0608221181. The cubic root of 33780051 is about 323.2610904836.

Adding to 33780051 its reverse (15008733), we get a palindrome (48788784).

The spelling of 33780051 in words is "thirty-three million, seven hundred eighty thousand, fifty-one".