55725772 has 6 divisors (see below), whose sum is σ = 97520108. Its totient is φ = 27862884.

The previous prime is 55725751. The next prime is 55725793. The reversal of 55725772 is 27752755.

It is a happy number.

55725772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55725751) and next prime (55725793).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965718 + ... + 6965725.

Almost surely, 2^55725772 is an apocalyptic number.

It is an amenable number.

55725772 is a deficient number, since it is larger than the sum of its proper divisors (41794336).

55725772 is a wasteful number, since it uses less digits than its factorization.

55725772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13931447 (or 13931445 counting only the distinct ones).

The product of its digits is 171500, while the sum is 40.

The square root of 55725772 is about 7464.9696583442. The cubic root of 55725772 is about 381.9607152386.

The spelling of 55725772 in words is "fifty-five million, seven hundred twenty-five thousand, seven hundred seventy-two".