Search a number
-
+
151887154 = 275943577
BaseRepresentation
bin10010000110110…
…01110100110010
3101120210200000011
421003121310302
5302340342104
623023245134
73523006456
oct1103316462
9346720004
10151887154
1178811081
1242a497aa
132560cb73
141625a666
15d503904
hex90d9d32

151887154 has 4 divisors (see below), whose sum is σ = 227830734. Its totient is φ = 75943576.

The previous prime is 151887103. The next prime is 151887157. The reversal of 151887154 is 451788151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451788151 = 4211073131.

It can be written as a sum of positive squares in only one way, i.e., 137241225 + 14645929 = 11715^2 + 3827^2 .

It is not an unprimeable number, because it can be changed into a prime (151887157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37971787 + ... + 37971790.

Almost surely, 2151887154 is an apocalyptic number.

151887154 is a deficient number, since it is larger than the sum of its proper divisors (75943580).

151887154 is an equidigital number, since it uses as much as digits as its factorization.

151887154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75943579.

The product of its digits is 44800, while the sum is 40.

The square root of 151887154 is about 12324.2506465911. The cubic root of 151887154 is about 533.5482275511.

The spelling of 151887154 in words is "one hundred fifty-one million, eight hundred eighty-seven thousand, one hundred fifty-four".

Divisors: 1 2 75943577 151887154