55352387 has 4 divisors (see below), whose sum is σ = 57261120. Its totient is φ = 53443656.

The previous prime is 55352359. The next prime is 55352389. The reversal of 55352387 is 78325355.

55352387 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78325355 = 5 ⋅15665071.

It is a cyclic number.

It is not a de Polignac number, because 55352387 - 2¹⁶ = 55286851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55352387.

It is not an unprimeable number, because it can be changed into a prime (55352389) 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, 954323 + ... + 954380.

It is an arithmetic number, because the mean of its divisors is an integer number (14315280).

Almost surely, 2^55352387 is an apocalyptic number.

55352387 is a deficient number, since it is larger than the sum of its proper divisors (1908733).

55352387 is a wasteful number, since it uses less digits than its factorization.

55352387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908732.

The product of its digits is 126000, while the sum is 38.

The square root of 55352387 is about 7439.9184807362. The cubic root of 55352387 is about 381.1057061405.

The spelling of 55352387 in words is "fifty-five million, three hundred fifty-two thousand, three hundred eighty-seven".