1552355121 has 8 divisors (see below), whose sum is σ = 2071371904. Its totient is φ = 1034120880.

The previous prime is 1552355111. The next prime is 1552355143. The reversal of 1552355121 is 1215532551.

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

It is not a de Polignac number, because 1552355121 - 2³⁰ = 478613297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1552355111) 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, 190990 + ... + 198951.

It is an arithmetic number, because the mean of its divisors is an integer number (258921488).

Almost surely, 2^1552355121 is an apocalyptic number.

It is an amenable number.

1552355121 is a deficient number, since it is larger than the sum of its proper divisors (519016783).

1552355121 is a wasteful number, since it uses less digits than its factorization.

1552355121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391271.

The product of its digits is 7500, while the sum is 30.

The square root of 1552355121 is about 39399.9380837077. The cubic root of 1552355121 is about 1157.8803744390.

Adding to 1552355121 its reverse (1215532551), we get a palindrome (2767887672).

The spelling of 1552355121 in words is "one billion, five hundred fifty-two million, three hundred fifty-five thousand, one hundred twenty-one".