521401470 has 16 divisors (see below), whose sum is σ = 1251363600. Its totient is φ = 139040384.

The previous prime is 521401457. The next prime is 521401483. The reversal of 521401470 is 74104125.

It is an interprime number because it is at equal distance from previous prime (521401457) and next prime (521401483).

It is a self number, because there is not a number n which added to its sum of digits gives 521401470.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8689995 + ... + 8690054.

It is an arithmetic number, because the mean of its divisors is an integer number (78210225).

Almost surely, 2^521401470 is an apocalyptic number.

521401470 is an abundant number, since it is smaller than the sum of its proper divisors (729962130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521401470 is a wasteful number, since it uses less digits than its factorization.

521401470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380059.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 521401470 is about 22834.2170875202. The cubic root of 521401470 is about 804.8669301537.

Adding to 521401470 its reverse (74104125), we get a palindrome (595505595).

The spelling of 521401470 in words is "five hundred twenty-one million, four hundred one thousand, four hundred seventy".