156454661 has 8 divisors (see below), whose sum is σ = 171345024. Its totient is φ = 141675520.

The previous prime is 156454657. The next prime is 156454667. The reversal of 156454661 is 166454651.

It is a happy number.

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 156454661 - 2² = 156454657 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 (156454667) 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, 24845 + ... + 30498.

It is an arithmetic number, because the mean of its divisors is an integer number (21418128).

Almost surely, 2^156454661 is an apocalyptic number.

156454661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156454661 is a deficient number, since it is larger than the sum of its proper divisors (14890363).

156454661 is a wasteful number, since it uses less digits than its factorization.

156454661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55611.

The product of its digits is 86400, while the sum is 38.

The square root of 156454661 is about 12508.1837610422. The cubic root of 156454661 is about 538.8437319128.

The spelling of 156454661 in words is "one hundred fifty-six million, four hundred fifty-four thousand, six hundred sixty-one".