153121345 has 16 divisors (see below), whose sum is σ = 199809792. Its totient is φ = 111971520.

The previous prime is 153121333. The next prime is 153121393. The reversal of 153121345 is 543121351.

It is a happy number.

It is not a de Polignac number, because 153121345 - 2⁵ = 153121313 is a prime.

It is a super-2 number, since 2×153121345² = 46892292589218050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4741 + ... + 18130.

It is an arithmetic number, because the mean of its divisors is an integer number (12488112).

Almost surely, 2^153121345 is an apocalyptic number.

It is an amenable number.

153121345 is a deficient number, since it is larger than the sum of its proper divisors (46688447).

153121345 is a wasteful number, since it uses less digits than its factorization.

153121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22992.

The product of its digits is 1800, while the sum is 25.

The square root of 153121345 is about 12374.2209855813. The cubic root of 153121345 is about 534.9894835910.

Adding to 153121345 its reverse (543121351), we get a palindrome (696242696).

The spelling of 153121345 in words is "one hundred fifty-three million, one hundred twenty-one thousand, three hundred forty-five".