151751551 has 4 divisors (see below), whose sum is σ = 173430352. Its totient is φ = 130072752.

The previous prime is 151751531. The next prime is 151751557. The reversal of 151751551 is 155157151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155157151 = 8053 ⋅19267.

It is a cyclic number.

It is not a de Polignac number, because 151751551 - 2¹⁵ = 151718783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151751557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10839390 + ... + 10839403.

It is an arithmetic number, because the mean of its divisors is an integer number (43357588).

Almost surely, 2^151751551 is an apocalyptic number.

151751551 is a deficient number, since it is larger than the sum of its proper divisors (21678801).

151751551 is an equidigital number, since it uses as much as digits as its factorization.

151751551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21678800.

The product of its digits is 4375, while the sum is 31.

The square root of 151751551 is about 12318.7479477421. The cubic root of 151751551 is about 533.3893984898.

The spelling of 151751551 in words is "one hundred fifty-one million, seven hundred fifty-one thousand, five hundred fifty-one".