1552414421 has 4 divisors (see below), whose sum is σ = 1553631372. Its totient is φ = 1551197472.

The previous prime is 1552414403. The next prime is 1552414429. The reversal of 1552414421 is 1244142551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1244142551 = 16349 ⋅76099.

It can be written as a sum of positive squares in 2 ways, for example, as 678029521 + 874384900 = 26039^2 + 29570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552414421 - 2¹⁰ = 1552413397 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 (1552414429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 606560 + ... + 609113.

It is an arithmetic number, because the mean of its divisors is an integer number (388407843).

Almost surely, 2^1552414421 is an apocalyptic number.

It is an amenable number.

1552414421 is a deficient number, since it is larger than the sum of its proper divisors (1216951).

1552414421 is a wasteful number, since it uses less digits than its factorization.

1552414421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216950.

The product of its digits is 6400, while the sum is 29.

The square root of 1552414421 is about 39400.6906157747. The cubic root of 1552414421 is about 1157.8951179366.

Adding to 1552414421 its reverse (1244142551), we get a palindrome (2796556972).

The spelling of 1552414421 in words is "one billion, five hundred fifty-two million, four hundred fourteen thousand, four hundred twenty-one".