45155949 has 4 divisors (see below), whose sum is σ = 60207936. Its totient is φ = 30103964.

The previous prime is 45155911. The next prime is 45155959. The reversal of 45155949 is 94955154.

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 45155949 - 2¹² = 45151853 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45155949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45155909) 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, 7525989 + ... + 7525994.

It is an arithmetic number, because the mean of its divisors is an integer number (15051984).

Almost surely, 2^45155949 is an apocalyptic number.

It is an amenable number.

45155949 is a deficient number, since it is larger than the sum of its proper divisors (15051987).

45155949 is a wasteful number, since it uses less digits than its factorization.

45155949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15051986.

The product of its digits is 162000, while the sum is 42.

The square root of 45155949 is about 6719.8176314540. The cubic root of 45155949 is about 356.0997411265.

The spelling of 45155949 in words is "forty-five million, one hundred fifty-five thousand, nine hundred forty-nine".