151616501 has 4 divisors (see below), whose sum is σ = 154842432. Its totient is φ = 148390572.

The previous prime is 151616477. The next prime is 151616503. The reversal of 151616501 is 105616151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151616501 - 2¹⁴ = 151600117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151616503) 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, 1612895 + ... + 1612988.

It is an arithmetic number, because the mean of its divisors is an integer number (38710608).

Almost surely, 2^151616501 is an apocalyptic number.

It is an amenable number.

151616501 is a deficient number, since it is larger than the sum of its proper divisors (3225931).

151616501 is an equidigital number, since it uses as much as digits as its factorization.

151616501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225930.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 151616501 is about 12313.2652452548. The cubic root of 151616501 is about 533.2311230782.

The spelling of 151616501 in words is "one hundred fifty-one million, six hundred sixteen thousand, five hundred one".