61235091 has 12 divisors (see below), whose sum is σ = 88648560. Its totient is φ = 40732080.

The previous prime is 61235089. The next prime is 61235093. The reversal of 61235091 is 19053216.

It is an interprime number because it is at equal distance from previous prime (61235089) and next prime (61235093).

It is not a de Polignac number, because 61235091 - 2¹ = 61235089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61235093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3231 + ... + 11528.

It is an arithmetic number, because the mean of its divisors is an integer number (7387380).

Almost surely, 2^61235091 is an apocalyptic number.

61235091 is a deficient number, since it is larger than the sum of its proper divisors (27413469).

61235091 is a wasteful number, since it uses less digits than its factorization.

61235091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226 (or 15223 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 61235091 is about 7825.2853622088. The cubic root of 61235091 is about 394.1547722653.

The spelling of 61235091 in words is "sixty-one million, two hundred thirty-five thousand, ninety-one".