61077901 has 4 divisors (see below), whose sum is σ = 61286652. Its totient is φ = 60869152.

The previous prime is 61077883. The next prime is 61077911. The reversal of 61077901 is 10977016.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34503876 + 26574025 = 5874^2 + 5155^2 .

It is a cyclic number.

It is not a de Polignac number, because 61077901 - 2¹³ = 61069709 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 (61077911) 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, 103936 + ... + 104521.

It is an arithmetic number, because the mean of its divisors is an integer number (15321663).

Almost surely, 2^61077901 is an apocalyptic number.

It is an amenable number.

61077901 is a deficient number, since it is larger than the sum of its proper divisors (208751).

61077901 is a wasteful number, since it uses less digits than its factorization.

61077901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208750.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 61077901 is about 7815.2351852008. The cubic root of 61077901 is about 393.8172191950.

It can be divided in two parts, 6 and 1077901, that multiplied together give a triangular number (6467406 = T₃₅₉₆).

The spelling of 61077901 in words is "sixty-one million, seventy-seven thousand, nine hundred one".