258420503 has 4 divisors (see below), whose sum is σ = 281913288. Its totient is φ = 234927720.

The previous prime is 258420473. The next prime is 258420509. The reversal of 258420503 is 305024852.

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

It is a cyclic number.

It is not a de Polignac number, because 258420503 - 2¹⁰ = 258419479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258420509) 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, 11746376 + ... + 11746397.

It is an arithmetic number, because the mean of its divisors is an integer number (70478322).

Almost surely, 2^258420503 is an apocalyptic number.

258420503 is a deficient number, since it is larger than the sum of its proper divisors (23492785).

258420503 is a wasteful number, since it uses less digits than its factorization.

258420503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23492784.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 258420503 is about 16075.4627616128. The cubic root of 258420503 is about 636.9553491355.

The spelling of 258420503 in words is "two hundred fifty-eight million, four hundred twenty thousand, five hundred three".