40521654 has 16 divisors (see below), whose sum is σ = 90048240. Its totient is φ = 13507200.

The previous prime is 40521647. The next prime is 40521673. The reversal of 40521654 is 45612504.

40521654 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 1 + 654 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375147 + ... + 375254.

It is an arithmetic number, because the mean of its divisors is an integer number (5628015).

Almost surely, 2^40521654 is an apocalyptic number.

40521654 is an abundant number, since it is smaller than the sum of its proper divisors (49526586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40521654 is a wasteful number, since it uses less digits than its factorization.

40521654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750412 (or 750406 counting only the distinct ones).

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

The square root of 40521654 is about 6365.6621022483. The cubic root of 40521654 is about 343.4754659162.

It can be divided in two parts, 4052165 and 4, that added together give a square (4052169 = 2013²).

The spelling of 40521654 in words is "forty million, five hundred twenty-one thousand, six hundred fifty-four".