521150465 has 8 divisors (see below), whose sum is σ = 682233408. Its totient is φ = 379018480.

The previous prime is 521150417. The next prime is 521150477. The reversal of 521150465 is 564051125.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521150465 - 2¹⁰ = 521149441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4737677 + ... + 4737786.

It is an arithmetic number, because the mean of its divisors is an integer number (85279176).

Almost surely, 2^521150465 is an apocalyptic number.

521150465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

521150465 is a deficient number, since it is larger than the sum of its proper divisors (161082943).

521150465 is a wasteful number, since it uses less digits than its factorization.

521150465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9475479.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 521150465 is about 22828.7201787573. The cubic root of 521150465 is about 804.7377539093.

The spelling of 521150465 in words is "five hundred twenty-one million, one hundred fifty thousand, four hundred sixty-five".