154221461 has 8 divisors (see below), whose sum is σ = 162769920. Its totient is φ = 145716192.

The previous prime is 154221421. The next prime is 154221503. The reversal of 154221461 is 164122451.

154221461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154221461 is a prime.

It is a super-3 number, since 3×154221461³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 154221461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154221421) 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, 3320 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (20346240).

Almost surely, 2^154221461 is an apocalyptic number.

It is an amenable number.

154221461 is a deficient number, since it is larger than the sum of its proper divisors (8548459).

154221461 is a wasteful number, since it uses less digits than its factorization.

154221461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21595.

The product of its digits is 1920, while the sum is 26.

The square root of 154221461 is about 12418.5933583478. The cubic root of 154221461 is about 536.2676563357.

The spelling of 154221461 in words is "one hundred fifty-four million, two hundred twenty-one thousand, four hundred sixty-one".