55260787 has 4 divisors (see below), whose sum is σ = 55276056. Its totient is φ = 55245520.

The previous prime is 55260763. The next prime is 55260811. The reversal of 55260787 is 78706255.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78706255 = 5 ⋅15741251.

It is an interprime number because it is at equal distance from previous prime (55260763) and next prime (55260811).

It is a cyclic number.

It is not a de Polignac number, because 55260787 - 2¹¹ = 55258739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55260707) 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, 1212 + ... + 10582.

It is an arithmetic number, because the mean of its divisors is an integer number (13819014).

Almost surely, 2^55260787 is an apocalyptic number.

55260787 is a deficient number, since it is larger than the sum of its proper divisors (15269).

55260787 is an equidigital number, since it uses as much as digits as its factorization.

55260787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15268.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 55260787 is about 7433.7599503885. The cubic root of 55260787 is about 380.8953655761.

The spelling of 55260787 in words is "fifty-five million, two hundred sixty thousand, seven hundred eighty-seven".