55785466501 has 4 divisors (see below), whose sum is σ = 56618085472. Its totient is φ = 54952847532.

The previous prime is 55785466483. The next prime is 55785466511. The reversal of 55785466501 is 10566458755.

It is a happy number.

55785466501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 10566458755 = 5 ⋅2113291751.

It is a cyclic number.

It is not a de Polignac number, because 55785466501 - 2²¹ = 55783369349 is a prime.

It is a super-2 number, since 2×55785466501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55785466511) 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, 416309385 + ... + 416309518.

It is an arithmetic number, because the mean of its divisors is an integer number (14154521368).

Almost surely, 2^55785466501 is an apocalyptic number.

It is an amenable number.

55785466501 is a deficient number, since it is larger than the sum of its proper divisors (832618971).

55785466501 is an equidigital number, since it uses as much as digits as its factorization.

55785466501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832618970.

The product of its (nonzero) digits is 5040000, while the sum is 52.

The spelling of 55785466501 in words is "fifty-five billion, seven hundred eighty-five million, four hundred sixty-six thousand, five hundred one".