55057436 has 12 divisors (see below), whose sum is σ = 110114928. Its totient is φ = 23596032.

The previous prime is 55057433. The next prime is 55057439. The reversal of 55057436 is 63475055.

It is an interprime number because it is at equal distance from previous prime (55057433) and next prime (55057439).

55057436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 55057396 and 55057405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55057433) 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, 983141 + ... + 983196.

It is an arithmetic number, because the mean of its divisors is an integer number (9176244).

Almost surely, 2^55057436 is an apocalyptic number.

It is an amenable number.

55057436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55057436 is a wasteful number, since it uses less digits than its factorization.

55057436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966348 (or 1966346 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 55057436 is about 7420.0698109923. The cubic root of 55057436 is about 380.4275796447.

The spelling of 55057436 in words is "fifty-five million, fifty-seven thousand, four hundred thirty-six".