390553 has 2 divisors, whose sum is σ = 390554. Its totient is φ = 390552.

The previous prime is 390539. The next prime is 390581. The reversal of 390553 is 355093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304704 + 85849 = 552^2 + 293^2 .

It is an emirp because it is prime and its reverse (355093) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390553 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (390503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195276 + 195277.

It is an arithmetic number, because the mean of its divisors is an integer number (195277).

2³⁹⁰⁵⁵³ is an apocalyptic number.

It is an amenable number.

390553 is a deficient number, since it is larger than the sum of its proper divisors (1).

390553 is an equidigital number, since it uses as much as digits as its factorization.

390553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 390553 is about 624.9423973455. The cubic root of 390553 is about 73.0959518881.

The spelling of 390553 in words is "three hundred ninety thousand, five hundred fifty-three".