149583551 has 4 divisors (see below), whose sum is σ = 161089992. Its totient is φ = 138077112.

The previous prime is 149583547. The next prime is 149583569. The reversal of 149583551 is 155385941.

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 149583551 - 2² = 149583547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149583499 and 149583508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149583571) 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, 5753201 + ... + 5753226.

It is an arithmetic number, because the mean of its divisors is an integer number (40272498).

Almost surely, 2^149583551 is an apocalyptic number.

149583551 is a deficient number, since it is larger than the sum of its proper divisors (11506441).

149583551 is a wasteful number, since it uses less digits than its factorization.

149583551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506440.

The product of its digits is 108000, while the sum is 41.

The square root of 149583551 is about 12230.4354378738. The cubic root of 149583551 is about 530.8371142809.

The spelling of 149583551 in words is "one hundred forty-nine million, five hundred eighty-three thousand, five hundred fifty-one".