155343561 has 8 divisors (see below), whose sum is σ = 207278400. Its totient is φ = 103485552.

The previous prime is 155343557. The next prime is 155343581. The reversal of 155343561 is 165343551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155343561 - 2² = 155343557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155343581) 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, 14310 + ... + 22703.

It is an arithmetic number, because the mean of its divisors is an integer number (25909800).

Almost surely, 2^155343561 is an apocalyptic number.

It is an amenable number.

155343561 is a deficient number, since it is larger than the sum of its proper divisors (51934839).

155343561 is a wasteful number, since it uses less digits than its factorization.

155343561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38415.

The product of its digits is 27000, while the sum is 33.

The square root of 155343561 is about 12463.6897024918. The cubic root of 155343561 is about 537.5651246852.

The spelling of 155343561 in words is "one hundred fifty-five million, three hundred forty-three thousand, five hundred sixty-one".