151221653 has 16 divisors (see below), whose sum is σ = 169670592. Its totient is φ = 133584000.

The previous prime is 151221643. The next prime is 151221671. The reversal of 151221653 is 356122151.

It is not a de Polignac number, because 151221653 - 2⁸ = 151221397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151221643) 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 15 ways as a sum of consecutive naturals, for example, 148775 + ... + 149787.

It is an arithmetic number, because the mean of its divisors is an integer number (10604412).

Almost surely, 2^151221653 is an apocalyptic number.

It is an amenable number.

151221653 is a deficient number, since it is larger than the sum of its proper divisors (18448939).

151221653 is a wasteful number, since it uses less digits than its factorization.

151221653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its digits is 1800, while the sum is 26.

The square root of 151221653 is about 12297.2213528097. The cubic root of 151221653 is about 532.7678307647.

The spelling of 151221653 in words is "one hundred fifty-one million, two hundred twenty-one thousand, six hundred fifty-three".