155287485 has 24 divisors (see below), whose sum is σ = 269496864. Its totient is φ = 82717920.

The previous prime is 155287453. The next prime is 155287487. The reversal of 155287485 is 584782551.

It is not a de Polignac number, because 155287485 - 2⁵ = 155287453 is a prime.

It is a super-2 number, since 2×155287485² = 48228405995250450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 155287485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155287487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47514 + ... + 50676.

It is an arithmetic number, because the mean of its divisors is an integer number (11229036).

Almost surely, 2^155287485 is an apocalyptic number.

155287485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155287485 is a deficient number, since it is larger than the sum of its proper divisors (114209379).

155287485 is a wasteful number, since it uses less digits than its factorization.

155287485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4262 counting only the distinct ones).

The product of its digits is 448000, while the sum is 45.

The square root of 155287485 is about 12461.4399248241. The cubic root of 155287485 is about 537.5004333871.

The spelling of 155287485 in words is "one hundred fifty-five million, two hundred eighty-seven thousand, four hundred eighty-five".