61213093 has 4 divisors (see below), whose sum is σ = 61253440. Its totient is φ = 61172748.

The previous prime is 61213091. The next prime is 61213151. The reversal of 61213093 is 39031216.

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 61213093 - 2¹ = 61213091 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 (61213091) 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, 17805 + ... + 20962.

It is an arithmetic number, because the mean of its divisors is an integer number (15313360).

Almost surely, 2^61213093 is an apocalyptic number.

It is an amenable number.

61213093 is a deficient number, since it is larger than the sum of its proper divisors (40347).

61213093 is a wasteful number, since it uses less digits than its factorization.

61213093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40346.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 61213093 is about 7823.8796642075. The cubic root of 61213093 is about 394.1075680941.

The spelling of 61213093 in words is "sixty-one million, two hundred thirteen thousand, ninety-three".