46121561 has 4 divisors (see below), whose sum is σ = 48834612. Its totient is φ = 43408512.

The previous prime is 46121533. The next prime is 46121567. The reversal of 46121561 is 16512164.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26265625 + 19855936 = 5125^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 46121561 - 2¹⁸ = 45859417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 46121561.

It is not an unprimeable number, because it can be changed into a prime (46121567) 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, 1356500 + ... + 1356533.

It is an arithmetic number, because the mean of its divisors is an integer number (12208653).

Almost surely, 2^46121561 is an apocalyptic number.

It is an amenable number.

46121561 is a deficient number, since it is larger than the sum of its proper divisors (2713051).

46121561 is a wasteful number, since it uses less digits than its factorization.

46121561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713050.

The product of its digits is 1440, while the sum is 26.

The square root of 46121561 is about 6791.2856662049. The cubic root of 46121561 is about 358.6201318631.

It can be divided in two parts, 461 and 21561, that added together give a palindrome (22022).

The spelling of 46121561 in words is "forty-six million, one hundred twenty-one thousand, five hundred sixty-one".