784125057 has 4 divisors (see below), whose sum is σ = 1045500080. Its totient is φ = 522750036.

The previous prime is 784125037. The next prime is 784125061. The reversal of 784125057 is 750521487.

784125057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 784125057 - 2¹¹ = 784123009 is a prime.

It is a super-2 number, since 2×784125057² = 1229704210030506498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (784125037) 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, 130687507 + ... + 130687512.

It is an arithmetic number, because the mean of its divisors is an integer number (261375020).

Almost surely, 2^784125057 is an apocalyptic number.

It is an amenable number.

784125057 is a deficient number, since it is larger than the sum of its proper divisors (261375023).

784125057 is a wasteful number, since it uses less digits than its factorization.

784125057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261375022.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 784125057 is about 28002.2330716677. The cubic root of 784125057 is about 922.1362836394.

The spelling of 784125057 in words is "seven hundred eighty-four million, one hundred twenty-five thousand, fifty-seven".