141555551 has 4 divisors (see below), whose sum is σ = 142016952. Its totient is φ = 141094152.

The previous prime is 141555539. The next prime is 141555553. The reversal of 141555551 is 155555141.

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

It is a cyclic number.

It is not a de Polignac number, because 141555551 - 2²² = 137361247 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 (141555553) 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, 230240 + ... + 230853.

It is an arithmetic number, because the mean of its divisors is an integer number (35504238).

Almost surely, 2^141555551 is an apocalyptic number.

141555551 is a deficient number, since it is larger than the sum of its proper divisors (461401).

141555551 is an equidigital number, since it uses as much as digits as its factorization.

141555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461400.

The product of its digits is 12500, while the sum is 32.

The square root of 141555551 is about 11897.7120069365. The cubic root of 141555551 is about 521.1654714398.

The spelling of 141555551 in words is "one hundred forty-one million, five hundred fifty-five thousand, five hundred fifty-one".