151555641 has 4 divisors (see below), whose sum is σ = 202074192. Its totient is φ = 101037092.

The previous prime is 151555619. The next prime is 151555643. The reversal of 151555641 is 146555151.

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 151555641 - 2¹¹ = 151553593 is a prime.

It is a super-2 number, since 2×151555641² = 45938224637841762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151555643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25259271 + ... + 25259276.

It is an arithmetic number, because the mean of its divisors is an integer number (50518548).

Almost surely, 2^151555641 is an apocalyptic number.

It is an amenable number.

151555641 is a deficient number, since it is larger than the sum of its proper divisors (50518551).

151555641 is an equidigital number, since it uses as much as digits as its factorization.

151555641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50518550.

The product of its digits is 15000, while the sum is 33.

The square root of 151555641 is about 12310.7936787195. The cubic root of 151555641 is about 533.1597658729.

The spelling of 151555641 in words is "one hundred fifty-one million, five hundred fifty-five thousand, six hundred forty-one".