387424553 has 4 divisors (see below), whose sum is σ = 390211920. Its totient is φ = 384637188.

The previous prime is 387424547. The next prime is 387424559. The reversal of 387424553 is 355424783.

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.

It is an interprime number because it is at equal distance from previous prime (387424547) and next prime (387424559).

It is a cyclic number.

It is not a de Polignac number, because 387424553 - 2⁴ = 387424537 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 387424553.

It is not an unprimeable number, because it can be changed into a prime (387424559) 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, 1393475 + ... + 1393752.

It is an arithmetic number, because the mean of its divisors is an integer number (97552980).

Almost surely, 2^387424553 is an apocalyptic number.

It is an amenable number.

387424553 is a deficient number, since it is larger than the sum of its proper divisors (2787367).

387424553 is a wasteful number, since it uses less digits than its factorization.

387424553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787366.

The product of its digits is 403200, while the sum is 41.

The square root of 387424553 is about 19683.1032360245. The cubic root of 387424553 is about 729.0025490354.

The spelling of 387424553 in words is "three hundred eighty-seven million, four hundred twenty-four thousand, five hundred fifty-three".