61001554 has 8 divisors (see below), whose sum is σ = 92445948. Its totient is φ = 30186240.

The previous prime is 61001531. The next prime is 61001573. The reversal of 61001554 is 45510016.

It can be written as a sum of positive squares in 2 ways, for example, as 55130625 + 5870929 = 7425^2 + 2423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157027 + ... + 157414.

Almost surely, 2^61001554 is an apocalyptic number.

61001554 is a deficient number, since it is larger than the sum of its proper divisors (31444394).

61001554 is a wasteful number, since it uses less digits than its factorization.

61001554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314540.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 61001554 is about 7810.3491599288. The cubic root of 61001554 is about 393.6530610778.

The spelling of 61001554 in words is "sixty-one million, one thousand, five hundred fifty-four".