1421513501 has 8 divisors (see below), whose sum is σ = 1458014208. Its totient is φ = 1385100000.

The previous prime is 1421513461. The next prime is 1421513521. The reversal of 1421513501 is 1053151241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421513501 - 2⁶ = 1421513437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421513521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11876 + ... + 54626.

It is an arithmetic number, because the mean of its divisors is an integer number (182251776).

Almost surely, 2^1421513501 is an apocalyptic number.

It is an amenable number.

1421513501 is a deficient number, since it is larger than the sum of its proper divisors (36500707).

1421513501 is an equidigital number, since it uses as much as digits as its factorization.

1421513501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43603.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1421513501 is about 37702.9640877213. The cubic root of 1421513501 is about 1124.3900564601.

Adding to 1421513501 its reverse (1053151241), we get a palindrome (2474664742).

The spelling of 1421513501 in words is "one billion, four hundred twenty-one million, five hundred thirteen thousand, five hundred one".