151020855 has 24 divisors (see below), whose sum is σ = 271466832. Its totient is φ = 80543808.

The previous prime is 151020851. The next prime is 151020913. The reversal of 151020855 is 558020151.

It is not a de Polignac number, because 151020855 - 2² = 151020851 is a prime.

It is a super-3 number, since 3×151020855³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151020851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60934 + ... + 63363.

It is an arithmetic number, because the mean of its divisors is an integer number (11311118).

Almost surely, 2^151020855 is an apocalyptic number.

151020855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

151020855 is a deficient number, since it is larger than the sum of its proper divisors (120445977).

151020855 is an equidigital number, since it uses as much as digits as its factorization.

151020855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124317 (or 124305 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 151020855 is about 12289.0542760621. The cubic root of 151020855 is about 532.5319163572.

The spelling of 151020855 in words is "one hundred fifty-one million, twenty thousand, eight hundred fifty-five".