1421451554 has 4 divisors (see below), whose sum is σ = 2132177334. Its totient is φ = 710725776.

The previous prime is 1421451539. The next prime is 1421451557. The reversal of 1421451554 is 4551541241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 958212025 + 463239529 = 30955^2 + 21523^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1421451554.

It is not an unprimeable number, because it can be changed into a prime (1421451557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355362887 + ... + 355362890.

Almost surely, 2^1421451554 is an apocalyptic number.

1421451554 is a deficient number, since it is larger than the sum of its proper divisors (710725780).

1421451554 is an equidigital number, since it uses as much as digits as its factorization.

1421451554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710725779.

The product of its digits is 16000, while the sum is 32.

The square root of 1421451554 is about 37702.1425651116. The cubic root of 1421451554 is about 1124.3737232578.

Adding to 1421451554 its reverse (4551541241), we get a palindrome (5972992795).

The spelling of 1421451554 in words is "one billion, four hundred twenty-one million, four hundred fifty-one thousand, five hundred fifty-four".