151645551 has 8 divisors (see below), whose sum is σ = 202330800. Its totient is φ = 101028672.

The previous prime is 151645531. The next prime is 151645577. The reversal of 151645551 is 155546151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 151645551 - 2¹⁴ = 151629167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151645531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11670 + ... + 20963.

It is an arithmetic number, because the mean of its divisors is an integer number (25291350).

Almost surely, 2^151645551 is an apocalyptic number.

151645551 is a deficient number, since it is larger than the sum of its proper divisors (50685249).

151645551 is a wasteful number, since it uses less digits than its factorization.

151645551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34185.

The product of its digits is 15000, while the sum is 33.

The square root of 151645551 is about 12314.4448108715. Note that the first 3 decimals coincide. The cubic root of 151645551 is about 533.2651769241.

The spelling of 151645551 in words is "one hundred fifty-one million, six hundred forty-five thousand, five hundred fifty-one".