151551615 has 16 divisors (see below), whose sum is σ = 243432288. Its totient is φ = 80510976.

The previous prime is 151551599. The next prime is 151551643. The reversal of 151551615 is 516155151.

It is not a de Polignac number, because 151551615 - 2⁴ = 151551599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15802 + ... + 23511.

It is an arithmetic number, because the mean of its divisors is an integer number (15214518).

Almost surely, 2^151551615 is an apocalyptic number.

151551615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

151551615 is a deficient number, since it is larger than the sum of its proper divisors (91880673).

151551615 is a wasteful number, since it uses less digits than its factorization.

151551615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39578.

The product of its digits is 3750, while the sum is 30.

The square root of 151551615 is about 12310.6301625871. The cubic root of 151551615 is about 533.1550447901.

The spelling of 151551615 in words is "one hundred fifty-one million, five hundred fifty-one thousand, six hundred fifteen".