1421577315 has 48 divisors (see below), whose sum is σ = 2617943328. Its totient is φ = 711134208.

The previous prime is 1421577299. The next prime is 1421577317. The reversal of 1421577315 is 5137751241.

1421577315 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1421577315 - 2⁴ = 1421577299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421577315.

It is not an unprimeable number, because it can be changed into a prime (1421577317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231829 + ... + 237881.

It is an arithmetic number, because the mean of its divisors is an integer number (54540486).

Almost surely, 2^1421577315 is an apocalyptic number.

1421577315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1421577315 is a deficient number, since it is larger than the sum of its proper divisors (1196366013).

1421577315 is a wasteful number, since it uses less digits than its factorization.

1421577315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388 (or 6385 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 1421577315 is about 37703.8103512099. The cubic root of 1421577315 is about 1124.4068814271.

The spelling of 1421577315 in words is "one billion, four hundred twenty-one million, five hundred seventy-seven thousand, three hundred fifteen".