523961405 has 16 divisors (see below), whose sum is σ = 700510464. Its totient is φ = 372953280.

The previous prime is 523961377. The next prime is 523961419. The reversal of 523961405 is 504169325.

It is not a de Polignac number, because 523961405 - 2⁶ = 523961341 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 98762 + ... + 103931.

It is an arithmetic number, because the mean of its divisors is an integer number (43781904).

Almost surely, 2^523961405 is an apocalyptic number.

523961405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

523961405 is a deficient number, since it is larger than the sum of its proper divisors (176549059).

523961405 is a wasteful number, since it uses less digits than its factorization.

523961405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202756.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 523961405 is about 22890.2032537940. The cubic root of 523961405 is about 806.1820039205.

The spelling of 523961405 in words is "five hundred twenty-three million, nine hundred sixty-one thousand, four hundred five".