40654521 has 8 divisors (see below), whose sum is σ = 60228960. Its totient is φ = 27102996.

The previous prime is 40654519. The next prime is 40654561. The reversal of 40654521 is 12545604.

40654521 is a `hidden beast` number, since 4 + 0 + 654 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 40654521 - 2¹ = 40654519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1505723 = 40654521 / (4 + 0 + 6 + 5 + 4 + 5 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (40654511) 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, 752835 + ... + 752888.

It is an arithmetic number, because the mean of its divisors is an integer number (7528620).

Almost surely, 2^40654521 is an apocalyptic number.

It is an amenable number.

40654521 is a deficient number, since it is larger than the sum of its proper divisors (19574439).

40654521 is a wasteful number, since it uses less digits than its factorization.

40654521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505732 (or 1505726 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 40654521 is about 6376.0897892047. The cubic root of 40654521 is about 343.8504651364.

The spelling of 40654521 in words is "forty million, six hundred fifty-four thousand, five hundred twenty-one".