156166461 has 40 divisors (see below), whose sum is σ = 259373664. Its totient is φ = 92832480.

The previous prime is 156166459. The next prime is 156166463. The reversal of 156166461 is 164661651.

It is a happy number.

156166461 is a `hidden beast` number, since 1 + 5 + 6 + 1 + 6 + 646 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (156166459) and next prime (156166463).

It is not a de Polignac number, because 156166461 - 2¹ = 156166459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156166463) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45570 + ... + 48876.

Almost surely, 2^156166461 is an apocalyptic number.

156166461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156166461 is a deficient number, since it is larger than the sum of its proper divisors (103207203).

156166461 is a wasteful number, since it uses less digits than its factorization.

156166461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383 (or 3374 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 156166461 is about 12496.6579932396. The cubic root of 156166461 is about 538.5126664256.

The spelling of 156166461 in words is "one hundred fifty-six million, one hundred sixty-six thousand, four hundred sixty-one".