151491000 has 64 divisors (see below), whose sum is σ = 472661280. Its totient is φ = 40396800.

The previous prime is 151490981. The next prime is 151491001. The reversal of 151491000 is 194151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151491001) 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, 22249 + ... + 28248.

Almost surely, 2^151491000 is an apocalyptic number.

151491000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151491000 is an abundant number, since it is smaller than the sum of its proper divisors (321170280).

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

151491000 is a wasteful number, since it uses less digits than its factorization.

151491000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50521 (or 50507 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 151491000 is about 12308.1680196526. The cubic root of 151491000 is about 533.0839545929.

The spelling of 151491000 in words is "one hundred fifty-one million, four hundred ninety-one thousand".