155418061 has 8 divisors (see below), whose sum is σ = 162321984. Its totient is φ = 148526400.

The previous prime is 155418059. The next prime is 155418079. The reversal of 155418061 is 160814551.

It is the 5090-th star 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 155418061 - 2¹ = 155418059 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 (155418001) 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, 31045 + ... + 35701.

It is an arithmetic number, because the mean of its divisors is an integer number (20290248).

Almost surely, 2^155418061 is an apocalyptic number.

It is an amenable number.

155418061 is a deficient number, since it is larger than the sum of its proper divisors (6903923).

155418061 is a wasteful number, since it uses less digits than its factorization.

155418061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6131.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 155418061 is about 12466.6780258415. The cubic root of 155418061 is about 537.6510464984.

The spelling of 155418061 in words is "one hundred fifty-five million, four hundred eighteen thousand, sixty-one".