1421513554 has 4 divisors (see below), whose sum is σ = 2132270334. Its totient is φ = 710756776.

The previous prime is 1421513549. The next prime is 1421513567. The reversal of 1421513554 is 4553151241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4553151241 = 19 ⋅239639539.

It can be written as a sum of positive squares in only one way, i.e., 796763529 + 624750025 = 28227^2 + 24995^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355378387 + ... + 355378390.

Almost surely, 2^1421513554 is an apocalyptic number.

1421513554 is a deficient number, since it is larger than the sum of its proper divisors (710756780).

1421513554 is an equidigital number, since it uses as much as digits as its factorization.

1421513554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710756779.

The product of its digits is 12000, while the sum is 31.

The square root of 1421513554 is about 37702.9647905838. The cubic root of 1421513554 is about 1124.3900704341.

Adding to 1421513554 its reverse (4553151241), we get a palindrome (5974664795).

The spelling of 1421513554 in words is "one billion, four hundred twenty-one million, five hundred thirteen thousand, five hundred fifty-four".