155121486 has 32 divisors (see below), whose sum is σ = 334702368. Its totient is φ = 47644800.

The previous prime is 155121469. The next prime is 155121487. The reversal of 155121486 is 684121551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155121487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53260 + ... + 56096.

It is an arithmetic number, because the mean of its divisors is an integer number (10459449).

Almost surely, 2^155121486 is an apocalyptic number.

155121486 is an abundant number, since it is smaller than the sum of its proper divisors (179580882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155121486 is a wasteful number, since it uses less digits than its factorization.

155121486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556.

The product of its digits is 9600, while the sum is 33.

The square root of 155121486 is about 12454.7776375173. Note that the first 3 decimals coincide. The cubic root of 155121486 is about 537.3088396121.

The spelling of 155121486 in words is "one hundred fifty-five million, one hundred twenty-one thousand, four hundred eighty-six".