53378587 has 4 divisors (see below), whose sum is σ = 53718736. Its totient is φ = 53038440.

The previous prime is 53378573. The next prime is 53378603. The reversal of 53378587 is 78587335.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53378587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53378527) 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, 169839 + ... + 170152.

It is an arithmetic number, because the mean of its divisors is an integer number (13429684).

Almost surely, 2^53378587 is an apocalyptic number.

53378587 is a deficient number, since it is larger than the sum of its proper divisors (340149).

53378587 is a wasteful number, since it uses less digits than its factorization.

53378587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340148.

The product of its digits is 705600, while the sum is 46.

The square root of 53378587 is about 7306.0650832031. The cubic root of 53378587 is about 376.5208447819.

It can be divided in two parts, 5337 and 8587, that added together give a square (13924 = 118²).

The spelling of 53378587 in words is "fifty-three million, three hundred seventy-eight thousand, five hundred eighty-seven".