61235013 has 16 divisors (see below), whose sum is σ = 96321536. Its totient is φ = 33862320.

The previous prime is 61235011. The next prime is 61235021. The reversal of 61235013 is 31053216.

It is not a de Polignac number, because 61235013 - 2¹ = 61235011 is a prime.

It is a super-2 number, since 2×61235013² = 7499453634220338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61235011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46381 + ... + 47682.

It is an arithmetic number, because the mean of its divisors is an integer number (6020096).

Almost surely, 2^61235013 is an apocalyptic number.

It is an amenable number.

61235013 is a deficient number, since it is larger than the sum of its proper divisors (35086523).

61235013 is a wasteful number, since it uses less digits than its factorization.

61235013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94104.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 61235013 is about 7825.2803783634. The cubic root of 61235013 is about 394.1546049098.

Adding to 61235013 its reverse (31053216), we get a palindrome (92288229).

The spelling of 61235013 in words is "sixty-one million, two hundred thirty-five thousand, thirteen".