61553435 has 4 divisors (see below), whose sum is σ = 73864128. Its totient is φ = 49242744.

The previous prime is 61553417. The next prime is 61553441. The reversal of 61553435 is 53435516.

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

It is a cyclic number.

It is not a de Polignac number, because 61553435 - 2¹⁰ = 61552411 is a prime.

It is a Duffinian number.

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, 6155339 + ... + 6155348.

It is an arithmetic number, because the mean of its divisors is an integer number (18466032).

Almost surely, 2^61553435 is an apocalyptic number.

61553435 is a deficient number, since it is larger than the sum of its proper divisors (12310693).

61553435 is a wasteful number, since it uses less digits than its factorization.

61553435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310692.

The product of its digits is 27000, while the sum is 32.

The square root of 61553435 is about 7845.5997221372. The cubic root of 61553435 is about 394.8366252741.

The spelling of 61553435 in words is "sixty-one million, five hundred fifty-three thousand, four hundred thirty-five".