154661401 has 8 divisors (see below), whose sum is σ = 157719744. Its totient is φ = 151633200.

The previous prime is 154661371. The next prime is 154661459. The reversal of 154661401 is 104166451.

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

It is a cyclic number.

It is not a de Polignac number, because 154661401 - 2²¹ = 152564249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154661401.

It is not an unprimeable number, because it can be changed into a prime (154661491) 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, 2970 + ... + 17836.

It is an arithmetic number, because the mean of its divisors is an integer number (19714968).

Almost surely, 2^154661401 is an apocalyptic number.

It is an amenable number.

154661401 is a deficient number, since it is larger than the sum of its proper divisors (3058343).

154661401 is a wasteful number, since it uses less digits than its factorization.

154661401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 154661401 is about 12436.2937002951. The cubic root of 154661401 is about 536.7771003700. Note that the first 3 decimals are identical.

The spelling of 154661401 in words is "one hundred fifty-four million, six hundred sixty-one thousand, four hundred one".