55787470 has 16 divisors (see below), whose sum is σ = 102867408. Its totient is φ = 21770560.

The previous prime is 55787467. The next prime is 55787531. The reversal of 55787470 is 7478755.

It is a super-2 number, since 2×55787470² = 6224483618001800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67624 + ... + 68443.

It is an arithmetic number, because the mean of its divisors is an integer number (6429213).

Almost surely, 2^55787470 is an apocalyptic number.

55787470 is a deficient number, since it is larger than the sum of its proper divisors (47079938).

55787470 is a wasteful number, since it uses less digits than its factorization.

55787470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136115.

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 55787470 is about 7469.1010168560. The cubic root of 55787470 is about 382.1016286163.

The spelling of 55787470 in words is "fifty-five million, seven hundred eighty-seven thousand, four hundred seventy".