1552401145 has 4 divisors (see below), whose sum is σ = 1862881380. Its totient is φ = 1241920912.

The previous prime is 1552401133. The next prime is 1552401157. The reversal of 1552401145 is 5411042551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5411042551 = 6563 ⋅824477.

It is an interprime number because it is at equal distance from previous prime (1552401133) and next prime (1552401157).

It can be written as a sum of positive squares in 2 ways, for example, as 370485504 + 1181915641 = 19248^2 + 34379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552401145 - 2¹⁹ = 1551876857 is a prime.

It is a super-2 number, since 2×1552401145² = 4819898629994622050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155240110 + ... + 155240119.

It is an arithmetic number, because the mean of its divisors is an integer number (465720345).

Almost surely, 2^1552401145 is an apocalyptic number.

It is an amenable number.

1552401145 is a deficient number, since it is larger than the sum of its proper divisors (310480235).

1552401145 is an equidigital number, since it uses as much as digits as its factorization.

1552401145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310480234.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1552401145 is about 39400.5221412103. The cubic root of 1552401145 is about 1157.8918172159.

Adding to 1552401145 its reverse (5411042551), we get a palindrome (6963443696).

The spelling of 1552401145 in words is "one billion, five hundred fifty-two million, four hundred one thousand, one hundred forty-five".