141550621 has 4 divisors (see below), whose sum is σ = 142873632. Its totient is φ = 140227612.

The previous prime is 141550613. The next prime is 141550631. The reversal of 141550621 is 126055141.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126055141 = 29 ⋅4346729.

It is a cyclic number.

It is not a de Polignac number, because 141550621 - 2³ = 141550613 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 (141550631) 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, 661345 + ... + 661558.

It is an arithmetic number, because the mean of its divisors is an integer number (35718408).

Almost surely, 2^141550621 is an apocalyptic number.

It is an amenable number.

141550621 is a deficient number, since it is larger than the sum of its proper divisors (1323011).

141550621 is a wasteful number, since it uses less digits than its factorization.

141550621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323010.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 141550621 is about 11897.5048224407. The cubic root of 141550621 is about 521.1594211046.

The spelling of 141550621 in words is "one hundred forty-one million, five hundred fifty thousand, six hundred twenty-one".