153221290 has 16 divisors (see below), whose sum is σ = 279290880. Its totient is φ = 60512400.

The previous prime is 153221249. The next prime is 153221291. The reversal of 153221290 is 92122351.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (153221291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96186 + ... + 97765.

It is an arithmetic number, because the mean of its divisors is an integer number (17455680).

Almost surely, 2^153221290 is an apocalyptic number.

153221290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

153221290 is a deficient number, since it is larger than the sum of its proper divisors (126069590).

153221290 is a wasteful number, since it uses less digits than its factorization.

153221290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194037.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 153221290 is about 12378.2587628471. The cubic root of 153221290 is about 535.1058572959.

Subtracting from 153221290 its sum of digits (25), we obtain a triangular number (153221265 = T₁₇₅₀₅).

It can be divided in two parts, 1532 and 21290, that added together give a palindrome (22822).

The spelling of 153221290 in words is "one hundred fifty-three million, two hundred twenty-one thousand, two hundred ninety".