155563461 has 6 divisors (see below), whose sum is σ = 224702790. Its totient is φ = 103708968.

The previous prime is 155563439. The next prime is 155563483. The reversal of 155563461 is 164365551.

155563461 is a `hidden beast` number, since 1 + 55 + 563 + 46 + 1 = 666.

155563461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155563439) and next prime (155563483).

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 18533025 = 11706^2 + 4305^2 .

It is not a de Polignac number, because 155563461 - 2¹⁰ = 155562437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155563361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8642406 + ... + 8642423.

It is an arithmetic number, because the mean of its divisors is an integer number (37450465).

Almost surely, 2^155563461 is an apocalyptic number.

It is an amenable number.

155563461 is a deficient number, since it is larger than the sum of its proper divisors (69139329).

155563461 is a wasteful number, since it uses less digits than its factorization.

155563461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17284835 (or 17284832 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 155563461 is about 12472.5082080550. The cubic root of 155563461 is about 537.8186591423.

The spelling of 155563461 in words is "one hundred fifty-five million, five hundred sixty-three thousand, four hundred sixty-one".