155646461 has 8 divisors (see below), whose sum is σ = 164340000. Its totient is φ = 147003120.

The previous prime is 155646433. The next prime is 155646467. The reversal of 155646461 is 164646551.

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 155646461 - 2⁶ = 155646397 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 (155646467) 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, 6086 + ... + 18663.

It is an arithmetic number, because the mean of its divisors is an integer number (20542500).

Almost surely, 2^155646461 is an apocalyptic number.

It is an amenable number.

155646461 is a deficient number, since it is larger than the sum of its proper divisors (8693539).

155646461 is a wasteful number, since it uses less digits than its factorization.

155646461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25099.

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

The square root of 155646461 is about 12475.8350822700. The cubic root of 155646461 is about 537.9142921653.

The spelling of 155646461 in words is "one hundred fifty-five million, six hundred forty-six thousand, four hundred sixty-one".