261499046 has 4 divisors (see below), whose sum is σ = 392248572. Its totient is φ = 130749522.

The previous prime is 261499037. The next prime is 261499081. The reversal of 261499046 is 640994162.

261499046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 261498994 and 261499012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65374760 + ... + 65374763.

It is an arithmetic number, because the mean of its divisors is an integer number (98062143).

Almost surely, 2^261499046 is an apocalyptic number.

261499046 is a deficient number, since it is larger than the sum of its proper divisors (130749526).

261499046 is a wasteful number, since it uses less digits than its factorization.

261499046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130749525.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 261499046 is about 16170.9321314512. The cubic root of 261499046 is about 639.4747040594.

The spelling of 261499046 in words is "two hundred sixty-one million, four hundred ninety-nine thousand, forty-six".