57019949 has 4 divisors (see below), whose sum is σ = 65165664. Its totient is φ = 48874236.

The previous prime is 57019939. The next prime is 57019951. The reversal of 57019949 is 94991075.

57019949 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 a cyclic number.

It is not a de Polignac number, because 57019949 - 2⁸ = 57019693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57019939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4072847 + ... + 4072860.

It is an arithmetic number, because the mean of its divisors is an integer number (16291416).

Almost surely, 2^57019949 is an apocalyptic number.

It is an amenable number.

57019949 is a deficient number, since it is larger than the sum of its proper divisors (8145715).

57019949 is an equidigital number, since it uses as much as digits as its factorization.

57019949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145714.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 57019949 is about 7551.1554744953. The cubic root of 57019949 is about 384.8950048203.

The spelling of 57019949 in words is "fifty-seven million, nineteen thousand, nine hundred forty-nine".