151481 has 8 divisors (see below), whose sum is σ = 169344. Its totient is φ = 134320.

The previous prime is 151477. The next prime is 151483. The reversal of 151481 is 184151.

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 151481 - 2² = 151477 is a prime.

It is a super-2 number, since 2×151481² = 45892986722, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151481.

It is not an unprimeable number, because it can be changed into a prime (151483) 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 7 ways as a sum of consecutive naturals, for example, 371 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2¹⁵¹⁴⁸¹ is an apocalyptic number.

151481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

151481 is a deficient number, since it is larger than the sum of its proper divisors (17863).

151481 is a wasteful number, since it uses less digits than its factorization.

151481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 160, while the sum is 20.

The square root of 151481 is about 389.2056011930. The cubic root of 151481 is about 53.3072224618.

Subtracting from 151481 its product of digits (160), we obtain a square (151321 = 389²).

The spelling of 151481 in words is "one hundred fifty-one thousand, four hundred eighty-one".