155135061 has 8 divisors (see below), whose sum is σ = 229829760. Its totient is φ = 103423356.

The previous prime is 155135059. The next prime is 155135063. The reversal of 155135061 is 160531551.

155135061 is a `hidden beast` number, since 1 + 551 + 3 + 50 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (155135059) and next prime (155135063).

It is not a de Polignac number, because 155135061 - 2¹ = 155135059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5745743 = 155135061 / (1 + 5 + 5 + 1 + 3 + 5 + 0 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155135063) 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, 2872845 + ... + 2872898.

It is an arithmetic number, because the mean of its divisors is an integer number (28728720).

Almost surely, 2^155135061 is an apocalyptic number.

It is an amenable number.

155135061 is a deficient number, since it is larger than the sum of its proper divisors (74694699).

155135061 is an equidigital number, since it uses as much as digits as its factorization.

155135061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745752 (or 5745746 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 155135061 is about 12455.3225971871. The cubic root of 155135061 is about 537.3245128218.

The spelling of 155135061 in words is "one hundred fifty-five million, one hundred thirty-five thousand, sixty-one".