83475557 has 4 divisors (see below), whose sum is σ = 91064256. Its totient is φ = 75886860.

The previous prime is 83475551. The next prime is 83475563. The reversal of 83475557 is 75557438.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (83475551) and next prime (83475563).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83475557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83475551) 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, 3794333 + ... + 3794354.

It is an arithmetic number, because the mean of its divisors is an integer number (22766064).

Almost surely, 2^83475557 is an apocalyptic number.

It is an amenable number.

83475557 is a deficient number, since it is larger than the sum of its proper divisors (7588699).

83475557 is a wasteful number, since it uses less digits than its factorization.

83475557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588698.

The product of its digits is 588000, while the sum is 44.

The square root of 83475557 is about 9136.4958819013. The cubic root of 83475557 is about 437.0385787724.

The spelling of 83475557 in words is "eighty-three million, four hundred seventy-five thousand, five hundred fifty-seven".