55513785 has 8 divisors (see below), whose sum is σ = 88822080. Its totient is φ = 29607344.

The previous prime is 55513781. The next prime is 55513793. The reversal of 55513785 is 58731555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55513785 - 2² = 55513781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55513781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850445 + ... + 1850474.

It is an arithmetic number, because the mean of its divisors is an integer number (11102760).

Almost surely, 2^55513785 is an apocalyptic number.

It is an amenable number.

55513785 is a deficient number, since it is larger than the sum of its proper divisors (33308295).

55513785 is a wasteful number, since it uses less digits than its factorization.

55513785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700927.

The product of its digits is 105000, while the sum is 39.

The square root of 55513785 is about 7450.7573440557. The cubic root of 55513785 is about 381.4757595074.

The spelling of 55513785 in words is "fifty-five million, five hundred thirteen thousand, seven hundred eighty-five".