45021511 has 8 divisors (see below), whose sum is σ = 47071584. Its totient is φ = 42979200.

The previous prime is 45021497. The next prime is 45021523. The reversal of 45021511 is 11512054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45021511 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 (45021541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12195 + ... + 15451.

It is an arithmetic number, because the mean of its divisors is an integer number (5883948).

Almost surely, 2^45021511 is an apocalyptic number.

45021511 is a deficient number, since it is larger than the sum of its proper divisors (2050073).

45021511 is a wasteful number, since it uses less digits than its factorization.

45021511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 45021511 is about 6709.8070762131. The cubic root of 45021511 is about 355.7459972220.

Adding to 45021511 its reverse (11512054), we get a palindrome (56533565).

The spelling of 45021511 in words is "forty-five million, twenty-one thousand, five hundred eleven".