55575437 has 4 divisors (see below), whose sum is σ = 58500480. Its totient is φ = 52650396.

The previous prime is 55575433. The next prime is 55575439. The reversal of 55575437 is 73457555.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73457555 = 5 ⋅14691511.

It is a cyclic number.

It is not a de Polignac number, because 55575437 - 2² = 55575433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55575394 and 55575403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55575433) 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, 1462493 + ... + 1462530.

It is an arithmetic number, because the mean of its divisors is an integer number (14625120).

Almost surely, 2^55575437 is an apocalyptic number.

It is an amenable number.

55575437 is a deficient number, since it is larger than the sum of its proper divisors (2925043).

55575437 is a wasteful number, since it uses less digits than its factorization.

55575437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925042.

The product of its digits is 367500, while the sum is 41.

The square root of 55575437 is about 7454.8934935383. The cubic root of 55575437 is about 381.6169259011.

The spelling of 55575437 in words is "fifty-five million, five hundred seventy-five thousand, four hundred thirty-seven".