498558261 has 16 divisors (see below), whose sum is σ = 677160000. Its totient is φ = 326222208.

The previous prime is 498558259. The next prime is 498558289. The reversal of 498558261 is 162855894.

It is not a de Polignac number, because 498558261 - 2¹ = 498558259 is a prime.

It is a super-2 number, since 2×498558261² = 497120679222688242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 498558261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498558241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27865 + ... + 42113.

It is an arithmetic number, because the mean of its divisors is an integer number (42322500).

Almost surely, 2^498558261 is an apocalyptic number.

It is an amenable number.

498558261 is a deficient number, since it is larger than the sum of its proper divisors (178601739).

498558261 is a wasteful number, since it uses less digits than its factorization.

498558261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14468.

The product of its digits is 691200, while the sum is 48.

The square root of 498558261 is about 22328.4182377525. The cubic root of 498558261 is about 792.9369188966.

The spelling of 498558261 in words is "four hundred ninety-eight million, five hundred fifty-eight thousand, two hundred sixty-one".