151201551 has 4 divisors (see below), whose sum is σ = 201602072. Its totient is φ = 100801032.

The previous prime is 151201543. The next prime is 151201579. The reversal of 151201551 is 155102151.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 151201551 - 2³ = 151201543 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 (151201511) 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, 25200256 + ... + 25200261.

It is an arithmetic number, because the mean of its divisors is an integer number (50400518).

Almost surely, 2^151201551 is an apocalyptic number.

151201551 is a deficient number, since it is larger than the sum of its proper divisors (50400521).

151201551 is an equidigital number, since it uses as much as digits as its factorization.

151201551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50400520.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 151201551 is about 12296.4039865320. The cubic root of 151201551 is about 532.7442226519.

The spelling of 151201551 in words is "one hundred fifty-one million, two hundred one thousand, five hundred fifty-one".