501432490 has 32 divisors (see below), whose sum is σ = 973198800. Its totient is φ = 184917504.

The previous prime is 501432487. The next prime is 501432509. The reversal of 501432490 is 94234105.

It can be written as a sum of positive squares in 8 ways, for example, as 315737361 + 185695129 = 17769^2 + 13627^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134532 + ... + 138208.

Almost surely, 2^501432490 is an apocalyptic number.

501432490 is a deficient number, since it is larger than the sum of its proper divisors (471766310).

501432490 is a wasteful number, since it uses less digits than its factorization.

501432490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 501432490 is about 22392.6883156087. The cubic root of 501432490 is about 794.4577819804.

Adding to 501432490 its reverse (94234105), we get a palindrome (595666595).

The spelling of 501432490 in words is "five hundred one million, four hundred thirty-two thousand, four hundred ninety".