83555401 has 4 divisors (see below), whose sum is σ = 85131972. Its totient is φ = 81978832.

The previous prime is 83555347. The next prime is 83555411. The reversal of 83555401 is 10455538.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10455538 = 2 ⋅5227769.

It can be written as a sum of positive squares in 2 ways, for example, as 64641600 + 18913801 = 8040^2 + 4349^2 .

It is a cyclic number.

It is not a de Polignac number, because 83555401 - 2¹⁵ = 83522633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83555411) 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, 788206 + ... + 788311.

It is an arithmetic number, because the mean of its divisors is an integer number (21282993).

Almost surely, 2^83555401 is an apocalyptic number.

It is an amenable number.

83555401 is a deficient number, since it is larger than the sum of its proper divisors (1576571).

83555401 is a wasteful number, since it uses less digits than its factorization.

83555401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576570.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 83555401 is about 9140.8643464390. The cubic root of 83555401 is about 437.1778761900.

The spelling of 83555401 in words is "eighty-three million, five hundred fifty-five thousand, four hundred one".