57009403 has 12 divisors (see below), whose sum is σ = 64274904. Its totient is φ = 50145600.

The previous prime is 57009401. The next prime is 57009409. The reversal of 57009403 is 30490075.

It is not a de Polignac number, because 57009403 - 2¹ = 57009401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57009401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7875 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (5356242).

Almost surely, 2^57009403 is an apocalyptic number.

57009403 is a deficient number, since it is larger than the sum of its proper divisors (7265501).

57009403 is a wasteful number, since it uses less digits than its factorization.

57009403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466 (or 5435 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 57009403 is about 7550.4571384784. The cubic root of 57009403 is about 384.8712742192.

Adding to 57009403 its reverse (30490075), we get a palindrome (87499478).

The spelling of 57009403 in words is "fifty-seven million, nine thousand, four hundred three".