61610451 has 16 divisors (see below), whose sum is σ = 94022400. Its totient is φ = 35153568.

The previous prime is 61610429. The next prime is 61610473. The reversal of 61610451 is 15401616.

It is an interprime number because it is at equal distance from previous prime (61610429) and next prime (61610473).

It is not a de Polignac number, because 61610451 - 2⁷ = 61610323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61610401) 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, 15640 + ... + 19178.

It is an arithmetic number, because the mean of its divisors is an integer number (5876400).

Almost surely, 2^61610451 is an apocalyptic number.

61610451 is a deficient number, since it is larger than the sum of its proper divisors (32411949).

61610451 is a wasteful number, since it uses less digits than its factorization.

61610451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61610451 is about 7849.2325102522. The cubic root of 61610451 is about 394.9584980164.

The spelling of 61610451 in words is "sixty-one million, six hundred ten thousand, four hundred fifty-one".