45549951 has 16 divisors (see below), whose sum is σ = 61493760. Its totient is φ = 29989440.

The previous prime is 45549853. The next prime is 45549971. The reversal of 45549951 is 15994554.

It is not a de Polignac number, because 45549951 - 2¹⁰ = 45548927 is a prime.

It is a super-2 number, since 2×45549951² = 4149596072204802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45549971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145371 + ... + 145683.

It is an arithmetic number, because the mean of its divisors is an integer number (3843360).

Almost surely, 2^45549951 is an apocalyptic number.

45549951 is a deficient number, since it is larger than the sum of its proper divisors (15943809).

45549951 is a wasteful number, since it uses less digits than its factorization.

45549951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

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

The square root of 45549951 is about 6749.0703804302. The cubic root of 45549951 is about 357.1324430716.

The spelling of 45549951 in words is "forty-five million, five hundred forty-nine thousand, nine hundred fifty-one".