55693537 has 4 divisors (see below), whose sum is σ = 55709460. Its totient is φ = 55677616.

The previous prime is 55693529. The next prime is 55693567. The reversal of 55693537 is 73539655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22619536 + 33074001 = 4756^2 + 5751^2 .

It is a cyclic number.

It is not a de Polignac number, because 55693537 - 2³ = 55693529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55693493 and 55693502.

It is not an unprimeable number, because it can be changed into a prime (55693507) 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, 178 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (13927365).

Almost surely, 2^55693537 is an apocalyptic number.

It is an amenable number.

55693537 is a deficient number, since it is larger than the sum of its proper divisors (15923).

55693537 is a wasteful number, since it uses less digits than its factorization.

55693537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15922.

The product of its digits is 425250, while the sum is 43.

The square root of 55693537 is about 7462.8102615570. The cubic root of 55693537 is about 381.8870516651.

The spelling of 55693537 in words is "fifty-five million, six hundred ninety-three thousand, five hundred thirty-seven".