61013402 has 4 divisors (see below), whose sum is σ = 91520106. Its totient is φ = 30506700.

The previous prime is 61013401. The next prime is 61013413. The reversal of 61013402 is 20431016.

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

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 1681 = 7811^2 + 41^2 .

It is a super-2 number, since 2×61013402² = 7445270447227208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61013401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15253349 + ... + 15253352.

Almost surely, 2^61013402 is an apocalyptic number.

61013402 is a deficient number, since it is larger than the sum of its proper divisors (30506704).

61013402 is a wasteful number, since it uses less digits than its factorization.

61013402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30506703.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 61013402 is about 7811.1076039189. The cubic root of 61013402 is about 393.6785451256.

Adding to 61013402 its reverse (20431016), we get a palindrome (81444418).

The spelling of 61013402 in words is "sixty-one million, thirteen thousand, four hundred two".