40651061 has 4 divisors (see below), whose sum is σ = 44346624. Its totient is φ = 36955500.

The previous prime is 40651057. The next prime is 40651073. The reversal of 40651061 is 16015604.

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 40651061 - 2² = 40651057 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 (40651001) 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, 1847765 + ... + 1847786.

It is an arithmetic number, because the mean of its divisors is an integer number (11086656).

Almost surely, 2^40651061 is an apocalyptic number.

It is an amenable number.

40651061 is a deficient number, since it is larger than the sum of its proper divisors (3695563).

40651061 is a wasteful number, since it uses less digits than its factorization.

40651061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695562.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40651061 is about 6375.8184572649. The cubic root of 40651061 is about 343.8407101216.

Adding to 40651061 its reverse (16015604), we get a palindrome (56666665).

The spelling of 40651061 in words is "forty million, six hundred fifty-one thousand, sixty-one".