61255401 has 4 divisors (see below), whose sum is σ = 81673872. Its totient is φ = 40836932.

The previous prime is 61255399. The next prime is 61255409. The reversal of 61255401 is 10455216.

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 61255401 - 2¹ = 61255399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61255409) 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, 10209231 + ... + 10209236.

It is an arithmetic number, because the mean of its divisors is an integer number (20418468).

Almost surely, 2^61255401 is an apocalyptic number.

It is an amenable number.

61255401 is a deficient number, since it is larger than the sum of its proper divisors (20418471).

61255401 is a wasteful number, since it uses less digits than its factorization.

61255401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20418470.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 61255401 is about 7826.5829708756. The cubic root of 61255401 is about 394.1983442239.

The spelling of 61255401 in words is "sixty-one million, two hundred fifty-five thousand, four hundred one".