1552121441 has 8 divisors (see below), whose sum is σ = 1729154280. Its totient is φ = 1383322752.

The previous prime is 1552121413. The next prime is 1552121449. The reversal of 1552121441 is 1441212551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7317025 + 1544804416 = 2705^2 + 39304^2 .

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 1552121441 - 2²² = 1547927137 is a prime.

It is a super-2 number, since 2×1552121441² = 4818161935223832962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1552121441.

It is not an unprimeable number, because it can be changed into a prime (1552121449) 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, 2058140 + ... + 2058893.

It is an arithmetic number, because the mean of its divisors is an integer number (216144285).

Almost surely, 2^1552121441 is an apocalyptic number.

It is an amenable number.

1552121441 is a deficient number, since it is larger than the sum of its proper divisors (177032839).

1552121441 is a wasteful number, since it uses less digits than its factorization.

1552121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117075.

The product of its digits is 1600, while the sum is 26.

The square root of 1552121441 is about 39396.9724852050. The cubic root of 1552121441 is about 1157.8222719555.

Adding to 1552121441 its reverse (1441212551), we get a palindrome (2993333992).

The spelling of 1552121441 in words is "one billion, five hundred fifty-two million, one hundred twenty-one thousand, four hundred forty-one".